Let's assume it is a point with x 1 and y 1. Example If we have a slope of 2 on the line (y 2x 1), we rise 2 units and run 1 unit to get from one point to another. Is a slope of 0 undefined A vertical lines slope. Write an equation of the line that passes through the given point and is perpendicular to the given line. Therefore, the slopes are 2 3, 1 3, and -3 2 for k, l, and n respectively. We can solve it by using the "point-slope" equation of a line y y1 2 (x x1) And then put in the point (5,4) y 4 2 (x 5) That is an answer But it might look better in y mx b form. Slope m 1. Answer link. However, what you have there isn't any normal line. Therefore, the equation of the vertical line that passes through (2,5) is x 2 since the x-coordinate is constant independent of the y variable. How to find an equation of a line perpendicular to a given line. These lines are always of the form (x c), where (c) is some number. Find the equation of the line that has undefined slope and passes though the point (-2, -3). When finding the slope of a line using the slope formula (y2-y1x2-x1), the slope of a vertical line would be (y0). Find an equation of the line with slope m that passes through the given point. The line is steeper, and so the Slope is larger. because division by zero is an undefined operation. Type an equation. Answer link. Step 2. Let&39;s use two points from the line x0 and calculate slope. An undefined slope is characterized by a vertical line while a zero slope has a horizontal line. ) BUY. To find the slope, m, of any line in the coordinate plane, we can identify two points. Vertical lines have the equation x a where a is the same value for x for each and every value of y. A zero slope line equation will be y b, with the slope being 0 (m 0). The Slope of this line 4 2 2. values on this. Find the slope of the tangent line at (-1, 1) for the equation x3 y5 5xy. 1 Answer mason m Mar 22, 2016 x2 Explanation. Jul 7, 2019 &0183;&32;A vertical line has an undefined slope. This means that for every unit increase in x x, y y increases by 2 2 units, and the line crosses the y-axis at the point (0, 3) (0, 3). This is because division by zero is undefined, and the slope of a line is determined by dividing the change in y-coordinates by the change in x-coordinates. Find the slope of the given line. Undefined Slope of any line or curve becomes increasingly steep, and its slope cannot be expressed as a finite numerical value. The slope and y-intercept calculator takes a linear equation and allows you to calculate the slope and y-intercept for the equation. Find an equation of a horizontal line containing the point (3,8). So the equation of a line, in slope-intercept form, with an undefined slope (mundefined) crossing through the point (-3, 5) is x -3 , which is a vertical line. Undefined Slope Algebra The Organic Chemistry Tutor 6. If you were to graph the line, it would be a vertical line, as shown above. All horizontal lines have slope 0. Step 2. Find the Equation Using Slope-Intercept Form (-8,1) , mundefined. The Point-Slope Form. Step 2. If the line has an undefined slope and passes through the point (2,3) , then the equation of the line is x2. Slope rise run Slope rise run. There are many ways to think about slope. If you are given a point-slope form of a line, you can get the slope intercept by following these steps Write down your point-slope form y - b m (x - a) Expand the right-hand side y - b mx - ma. Hence the equation of. Step 2. Draw a line that intercepts the y-axis at (0, 3) so that the line has slope 43. You may already be familiar with the ymxb form (called the slope-intercept form of the equation of a line). And we're asked to find the slope of the graph of that equation. Any vertical line has an undefined slope. Therefore, this is the slope between the points (0, 3) and (2, 7) m Change in y Change in x 7 3 2 0 4 2 2. An undefined slope can be determined by using the slope formula stated above. Answer link. The normal line&39;s slope is the negative reciprocal of the tangent&39;s slope, so the equation of the normal line becomes. So the formula would be x2. a line goes through the point (-7,-5). If x does not change, then we are dividing by zero, which is undefined. When the x coordinate of the line is zero it will give an undefined slope and the vertical line is drawn. Substitute the values into the point-slope form, y y1 m(x x1) y y 1 m (x x 1). (2-0) (2-2) 20 is undefined. When using slope-intercept form, the values for the slope and y -intercept of the line must be known and substituted into the equation. What is the equation for an undefined slope Uncategorized. The slope is 34, which is a negative number, and the line in Figure 1. Is a slope of 0 undefined A vertical lines slope. A vertical line has undefined slope because all points on the line have the same x -coordinate. Compare these values to the equation y mx b. x 2. When an equation has two variables, such as x and y, the slope of the line that is formed by graphing the. The equation of a vertical line will be of the form x a number. So what should you do Follow along as Kate walks you through. Lines With Undefined Slope Slope is the steepness of a line and can be calculated by comparing the change in y -coordinates with respect to the change in corresponding x -coordinates. Given a line containing the points (1,4), (2,7) and (3,10) determine that slope-intercept form of the equation, provide one additional point on this line, and. It will also pass through the points (-2 ,0),(-2 ,-4) and so on. Rise is the change in y-coordinates, and run is the change in x-coordinates. There is no change of x-value. The line goes straight up and down. Begin with slope-intercept form; ymxb. In this problem the equation given is already in y mx b form, so we can identify that the slope is m 4 3 and the y intercept is (0,-2). The equation yb is the equation of a horizontal line. Now our slope is back to zero. (x1, y1) coordinates of first point in the line. (3, 1), undefined slope. The equation can be in any form as long as its linear and and you can. Given any two points on the line say, (x1, y1) and (x2, y2), the slope of the line is given by, m y2 y1 x2 x1. As weve been graphing linear equations, weve seen that some lines slant up as they go from left to right and some lines slant down. Slope can be positive, negative, zero, or undefined. To find the y-intercept, we can set x 0. If the slope does not exist, only give the standard form and enter DNE in the blanks for the other two forms. A number divided by zero is zero. The Gradient 3 5 0. y y1 m(x x1) This is an important formula, as it will be used in other areas of College Algebra and often in. When the x-coordinates of a line are all the same, the run is 0. Question Graph the line that contains the point P (4,3) and has an undefined slope. All you need is to find the y intercept. Write the slope intercept form of the equation of the line through the given point with the given slope. Use the point-slope formula to write an equation of the line having the given conditions. What is an undefined slope An undefined slope is the slope of a line that results in an invalid value. The line is less steep, and so the Gradient is smaller. For more on this see Slope of a vertical line. Explanation A line with an undefined slope is a vertical line. Note The equation of the x-axis is y 0. x 2. A vertical line has undefined slope because all points on the line have the same x -coordinate. In the case of the line x 2, consider the two points (2,0) and (2,1). As an example, using the points (-4, 0) and (-4, 3) for the vertical line below, the slope is, which is undefined since we can&39;t divide by. Step 2. Therefore the equation is x 5. have the same slopes because the lines do not meet or touch. The point in this problem has a value for x of 4. So, the equation of the line is x a. On a vertical line, all x -coordinates remain the same while the y -coordinates range from &177; . Step 2 Identify the slope and -intercept of the linear equation. The letter m m represents the slope and the letter b b represents the y y -intercept. If a vertical line goes through point (4,0), every point on that line has a value of 4. The "slope" of a vertical line. If given slope and y y -intercept, use slopeintercept form y mx b y m x b. The equation of the tangent line (where m is the slope and is the given point) becomes. If we take the implicit derivative of x3 x2 y2 0 x 3 x 2 y 2 0, we find that dy dx 3x22x 2y. x h 2 The equation of the line with an undefined slope and going through a point (2,4) is x h 2. x2 Undefined slopes occur with vertical lines, which are in the form x"number". If a slope is undefined, it means that the x value does not change. (4) Find the gradient of the given line y mx 3 at the point (2,5) substitute for x and y. Types of slope. (x1, y1) coordinates of first point in the line. Using the form latexy0x3latex, you can see that the slope is 0. This form of the equation is very useful. 9M subscribers Join Subscribe 471 Save 31K views 1 year ago Linear Equations and Slope Playlist This algebra video provides a basic. So we say that the slope of the vertical line x 3 x 3 is undefined. Find the slope of the tangent line at (-1, 1) for the equation x3 y5 5xy. Not the exact question you're looking for. The equation point slope calculator will find an equation in either slope intercept form or point slope form when given a point and a slope. Positive Slope; Negative Slope; Zero Slope; Undefined Slope (also known as Infinite Slope) Note The fourth on the list is not considered a type of slope because this is the case of a vertical line where the line is parallel to the y-axis, and it does not have a movement along the x-axis. The equation for a line with an undefined slope is eqxa eq. What exactly is an. I understand that an undefined slope indicates a vertical line. Its equation would be y 2x 3 y 2 x 3. Write the answer in slope-intercept form (if possible). A line passes through the point (1, -5) and has a slope of 9. Question Graph the line that contains the point P (4,3) and has an undefined slope. If written with a y in the equation, x1 becomes x 0y 1 This cannot be converted to slope y-intercept form, because you cannot isolate a 1y by itself on one side of the equation. Then, the slope of the line -AB. The function defined by the equation f(x) mx b is called a linear function. The only power of the variable is (1). The letter m m represents the slope and the letter b b represents the y y -intercept. An undefined slope indicates that we have a vertical line parallel to the y-axis and passing through all points in the plane with an x-coordinate constant (c) The equation is written in the form x c. The coefficient of "x" (the "m" value) is the slope of the line. where A,B and C are some constants. (3, 1), undefined slope. The Gradient 3 3 1. a) y 4 3x 2. A vertical line will always have the same value of x for every value of y. Therefore the equation is x 5. because they only have an x- intercept. A zero slope line equation will be y b, with the slope being 0 (m 0). Use the x-value of the point to find the equation of the vertical line. where, m is the slope, such that m tan yx. Since the x coordinate of the point in your problem is 4, the equation of the vertical line passing thru the point (4,3) would be x 4. Who are the experts. In fact the equation of a vertical line is of the form x c, for some constant c. In this case the gradient is undefined (as we cannot divide by 0). If it is, the equation is characterized as undefined. What Does the Slope of a Line Mean You can&39;t learn about linear equations without learning about slope. This means that we have an undefined slope. Any equation of the line having slope as undefined will be of the form x a. (Solve it for x to convince yourself. This is why k -3. So, it will look like y mx b where "m" and "b" are numbers. It is the same equation, in a different form The "b" value (called the y-intercept) is where the line crosses the y-axis. For example when given 2 points (2, 4) (2,7) The x-values are the same, while the y-values differ, which would create a. This occurs when there is no change in the x-axis i. These can be any two-point of a line in a cartesian plane. There are 3 steps to solve this one. So the Slope is equal to 1. We will use the formula to calculate the slope of the line passing through the points (3, 8) (3,8) and (-2, 10) (2,10). The equation yb is the equation of a vertical line with zero slope. Find an equation of the line. The slope of a line is the steepness of the line. Nov 17, 2020 &0183;&32;33 people found it helpful. Slope of line is given by m y 2 y 1 x 2 x 1 m is undefined, if denominator becomes zero i. The line perpendicular to this is a vertical line which has a slope which is &39;undefined&39;. The equation for an undefined slope is x a, where a represents the x-coordinate of the. The normal line&39;s slope is the negative reciprocal of the tangent&39;s slope, so the equation of the normal line becomes. And then as we go beyond that, as we go to, as we increase by another pi over four, our slope goes back to being positive one. However, for a horizontal line, the slope formula would end up (0x). Therefore, the equation of the vertical line that passes through (2,5) is x 2 since the x-coordinate is constant independent of the y variable. The types of slope depend on their values and the sign with the value. So the Gradient is equal to 1. When finding the slope of a line using the slope formula (y2-y1x2-x1), the slope of a vertical line would be (y0). When the y-coordinates are the same, the rise is 0. Vertical lines have the equation x a where a is the same value for x for each and every value of y. Now, we can plug in a slope of 0 for m and see how it changes the formula y 0 x b. The slope of the equation of line parallel to y axis is undefined, since it is inclined at 90&186; with the x axis. The general slope of a line formula is given as, y mx b. This means that for every unit increase in x x, y y increases by 2 2 units, and the line crosses the y-axis at the point (0, 3) (0, 3). If the line has an undefined slope and passes through the point (2,3), then the equation of the line is x 2. With the key terms and formulas clearly understood, you are now ready to find the equation of the tangent line. The line is steeper, and so the Slope is larger. Step 1. The line is less steep, and so the Slope is smaller. In the slope formula, the denominator will be zero, so the slope of a vertical line is undefined. A linear equation with an undefined slope is an equation where, when graphed, forms a vertical line. What is "Undefined" slope "Undefined" slope refers to the line on the graph is vertical, and that. Sep 26, 2023 &0183;&32;This slope intercept form calculator allows you to find the equation of a line in the slope intercept form. Because this input value is mapped to more than one output value, a vertical line does not represent a function. We can write the slope of this line and then change it to a different form. All horizontal lines have slope 0. Using latex(3,3)latex as Point 1 and. This form of the equation is very useful. y mx b y m x b. For drawing lines, use the graphing calculator. When an equation forms a vertical or horizontal line, the slope of the line will be undefined and the equation cannot be solved. The equation yb is the equation of a vertical line with undefined slope B. So with Linear Equations, it&x27;s just those four slope line types to learn and understand. Slope Formula Calculator (Free online tool calculates slope given 2 points). The point-slope form of an equation of a line with slope m and containing the point (x1, y1) is y y1 m(x x1) We can use the point-slope form of an equation to find an equation of a line when we know the slope and at least one point. To understand the discussion below, you should be familiar with finding the slope using the slope formula. where m is the slope of the line, and b is the y-intercept. That line would move up two squares and over one as it went along. 3 an abstract function aftern. When that is the case, M would be the slope. Find the slope of the line containing the given points. Explanation A line with an undefined slope is a vertical line. Further, all vertical lines are parallel to this vertical line and have undefined slope. Slope y 2 y 1 x 2 x 1 7 1 4 2 6 2 3 Step 3 Gut check. Follow 2. Select two points on a vertical line and. Whenever the run of a line is zero, the slope is undefined. So the formula would be x2. 8 years ago. where m is the slope and c is the intercept. Given a line containing the points (1,4), (2,7) and (3,10) determine that slope-intercept form of the equation, provide one additional point on this line, and. The slope of a straight line between two points says (x 1,y 1) and (x 2,y 2) can be easily determined by finding the difference between the coordinates of the points. The slope is usually represented by the letter m. 23 x. " 2. Identify the slope and y -intercept of the line from the equation y 47x 2 y 4 7 x. We know the exact value of every point on the. x 2 - x 1. ) So B 0, and you can choose any non-zero number for A (you need x in the equation). With undefined slope, through (14, 5). A line with a slope of zero is a horizontal line where, for any change in x, the change in y is always 0. Find an equation in slope-intercept form (where possible) for the line. Aug 22, 2018 &0183;&32;Define slope as the ratio of vertical rise to horizontal run. Find the Vertical Line Through the Point (-6,-9) (6,9) (- 6, - 9) Every point on a vertical line has the same x-value. Click on to enlarge Slope of a line in coordinates system, from f(x) 12x 2 to f(x) 12x 2. Follow 2. The line with point slope equation eqy-3(x2) eq has a slope of -3. Sep 28, 2022 &0183;&32;Slope of a Line (Straight Line) Formula. L has undefined slope. Finding m. Free slope calculator - find the slope of a line given two points, a function or the intercept step-by-step. Write the answer in slope-intercept form (if possible). To plot, I&39;m going to put it into my. As per the definition of slope, we calculate the slope this way m change in y coordinates change in x coordinates (y 2 - y 1) (x 2 - x 1) Now, since the x-coordinate remains constant on a vertical line, therefore we have x 2 x 1 x. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like. It will also pass through the points (-2 ,0),(-2 ,-4) and so on. Oct 5, 2020 &0183;&32;Hi Karina, Any vertical line has an undefined slope. The equation yb is the equation of a vertical line with zero slope C. Since the slope of a line is basically the ratio of the y-component of the line to its x-component,. State the formula for slope as Compare slopes of graphs in terms of "more steep," "less steep," etc. Note The equation of the x-axis is y 0. There is no change in the x-values so we end up with y0. So with Linear Equations, it&x27;s just those four slope line types to learn and understand. Put the answer in slope-intercept form. An undefined slope can be determined by using the slope formula stated above. Lines With Undefined Slope Slope is the steepness of a line and can be calculated by comparing the change in y -coordinates with respect to the change in corresponding x -coordinates. Students input the values for the two coordinates. To plot, I&39;m going to put it into my. Where is the angle made by the line w. Saying you have an undefined slope is the same thing as saying you have zero x (which would render the sloped undefined since you&x27;d be dividing by zero). The equation x 3 is a vertical line whose slope is undefined. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Undefined slope occurs when the slope is for a vertical line. Dec 8, 2023 &0183;&32;Find the slope of the line through (3, 5) and (3, 4). You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Dec 19, 2022 &0183;&32;Find the equation of the line that is. These include positive slope, negative slope, undefined, and a zero slope. We know that tan is also a slope of the line hence the slope of a line can also be represented as,; Slope (m) tan yx. The equation yb is the equation of a horizontal line with zero slope D. In other term, the slope of a line between two points is also said to be the rise of the line from one point to another (along y-axis) over the run (along x-axis). We're going to have a slope of negative one. math 525 umich reddit, sexiest porn games
To find the y-intercept and the slope from equation of a line, we need to convert this equation into slope-intercept form. . Equation of undefined slope
If P(x 1,y 1) and Q(x 2,y 2) are the two points on a straight line, then the slope formula is given by. (Let x be the independent variable and y be the dependent variable. So, it will look like y mx b where "m" and "b" are numbers. The x coordinates remain the same for all the points on the vertical line and there is no run. So, the slope of the tangent line should be undefined at any point where y is 0. Add b to both sides y mx - ma b. Expert Answer. Vertical lines have the equation x a where a is the same value for x for each and every value of y. Let's start with ymxb Use what we know 76mb-> Now we express b in terms of m b7-6m->ymx7-6m->ym (x-6)7 An. m y b x m y b x. When a slope is undefined, the denominator (or bottom) is zero. Show solution Step 2 Plug in these values to the slope formula to find the slope. Multiplying by A and adding gives. Question Write the equation of the line that passes through the given point and has the given slope. m is the slope, or how &39;steep&39; the line is; and b is the Y-intercept (what is the value of y when x0), or where does the line pass through the Y-axis. 9M subscribers Join Subscribe 471 Save 31K views 1 year ago Linear Equations and Slope Playlist This algebra video provides a basic. If we choose any two points on this line, lets. The equation of a straight line can be written in many other ways. A number divided by zero is zero. Begin with slope-intercept form; ymxb. Any equation of the line having slope as undefined will be of the form x a. Write the slope intercept form of the equation of the line through the given point with the given slope. It will also pass through the. Slope can be positive, negative, zero, or undefined. Additionally, in the equation. Which of the following statements is true about the equation yb A. Determine the slope of a line given two points on the line. The graph of such a line is a vertical line. t to the positive X-axis, y change in the y coordinates, x change in the x coordinates. How do you solve slope intercept form Find an equation of the line described below. 9M subscribers Join Subscribe 471 Save 31K views 1 year ago Linear Equations and Slope Playlist This algebra video provides a basic. The slope of any vertical line is undefined. Since you can use any two points to calculate the slope of the line, we can then apply the slope formula using &92; ((x1,y1) (4,1)&92;) and &92; ((x2, y2) (4,2)&92;). Another way to graph linear functions is by using specific characteristics of the function rather than plotting points. 8 years ago. Slope is rise divided by run. Algebra questions and answers. When you have a vertical line you end up with a zero as a denominat. Slope is rise divided by run. Indicate the equation of the line through (2, -4) and having slope of 35. This is because zero slopes represent horizontal lines, whereas the equation x0 represents a vertical line. So we say that the slope of the vertical line &92;(x3&92;) is undefined. 7 slants downhill (as we sweep our eyes from left to right). There is no change of x-value. With the key terms and formulas clearly understood, you are now ready to find the equation of the tangent line. This type of linear equation creates vertical lines. Answer and Explanation 1. Aug 22, 2018 &0183;&32;Define slope as the ratio of vertical rise to horizontal run. (3, 1), undefined slope. m y x y2 y1 x2 x1. The equation yb is the equation of a vertical line with undefined slope B. However, when we use the. Henceforth, the equation of (x-x 1) is non-workable, and undefined. Vertical lines have an undefined slope, so having a number like 100,000,000,000 is close enough for a vertical line. The only way for it to be undefined is when x 2 x 1 0 or x 2 x 1. Slope of line is given by m y 2 y 1 x 2 x 1 m is undefined, if denominator becomes zero i. Send us Feedback. Nov 3, 2014. 4y 3x 7. The letter m m represents the slope and the letter b b represents the y y -intercept. Whenever the run of a line is zero, the slope is undefined. The line is less steep, and so the Slope is smaller. The general slope of a line formula is given as, y mx b. Find an equation of a horizontal line containing the point (3,8). To Write and Equation of a Line. Dec 19, 2022 &0183;&32;Find the equation of the line that is. Problem 3. So we say that the slope of the vertical line x 3 x 3 is undefined. 23 x. Free line equation calculator - find the equation of a line given two points, a slope, or intercept step-by-step. m y y 1 x x 1. Lastly, take note that all points on this vertical line will be x -3, including the point y 3. Every point on the line has x coordinate 1. At a 90 degree angle. where, m is the slope, such that m tan yx. ; Putting it in standard form, you get x 3 0; The first choice is correct. The "slope" of a vertical line. Slope intercept form y 2x 1 becomes 2x - y -1 written in standard form. If m1 and m2 are the slopes of two parallel lines then m1m2. 8 years ago. This is why k -3. Moreover, dividing by zero is an undefined operation. How to calculate slope There are two ways to calculate the slope of a line. The standard form of the equation of a line is Ax2ByC0. Find the slope of the line x4. Plug it back into the equation y 3x - 12. A vertical line has a slope that is undefined. Henceforth, the equation of (x-x 1) is non-workable, and undefined. This often occurs when the line is either vertical or horizontal. ) BUY. Slope is the rise over the run. The only equation that is both vertical and goes through (-7, -2) is x -7. Undefined slope of tangent lines. Which of the following statements is not true A. Slope-intercept form of a linear equation is one of three main forms used to represent a linear relationship. When an equation forms a vertical or horizontal line, the slope of the line will be undefined and the equation cannot be solved. In particular, &x27;a&x27; denotes the x-intercept, i. When an equation forms a vertical or horizontal line, the slope of the line will be undefined and the equation cannot be solved. A line with an undefined slope is a vertical line where for each and every value of y; x has the same value. If we choose any two points on this line, lets. Example 1. Practice Problems. 23 x is add. so a vertical line passing through (-1,4) is x -1. Step 2 Click the blue arrow to submit. The riserun formula for slope always has a zero denominator and is undefined. Vertical line is the only one that doesn&x27;t work within a function, since an input must be unique to an output, but one x maps to all y). From the angle made with the x-axis. The graph is a horizontal line. Given a line containing the points (1,4), (2,7) and (3,10) determine that slope-intercept form of the equation, provide one additional point on this line, and. So the formula would be x2. The equation of the vertical line passing through (0,6) is x0. Parallel Lines. x a Where, x is the coordinate of a point on the line and a is the point at which the line crosses the x-intercept. If you missed this problem, review Example 4. Slope is rise divided by run. The equation of a line in the slope-intercept form is. The point-slope form of an equation of a line with slope m and containing the point (x1, y1) is y y1 m(x x1) We can use the point-slope form of an equation to find an equation of a line when we know the slope and at least one point. The slope-intercept form of a linear equation is where one side contains just "y". Slope Calculator Slope Calculator - Two Points use whole numbers, fractions or decimals (x1 y1) (x2 y2) Answer Slope m 12 5 As a decimal m -2. Explanation A line with an undefined slope is a vertical line. David Severin. Nov 21, 2023 &0183;&32;Alternatively, the equation x0 has an undefined slope. This is true for all vertical linesthey all have a slope that is undefined. Sketch the graph of the line through the given point (-3, -4) with the indicated slope -1. To show the equation of a line with an undefined slope, the equation must be written in standard form because only an x will be present to represent the vertical line. Given the slope and one point on a line, we can find the equation of the line using point-slope form. So the equation of a line, in slope-intercept form, with an undefined slope (mundefined) crossing through the point (-3, 5) is x -3 , which is a vertical line. To find the slope of the line, we measure the distance along the vertical and horizontal sides of the triangle. Therefore, the equation of the vertical line that passes through (2,5) is x 2 since the x-coordinate is constant independent of the y variable. Explanation Find standard form of equation with undefined slope and point (2,5) Undefined slope is a vertical line of x a for some constant a. because division by zero is an undefined operation. Which of the following statements is true about the equation yb A. The slope of a line can be calculated from the equation of the line. In this case, the equation of the line is y b Undefined slope, if a line y mx b is vertical. Answer link. If your line has an undefined slope, you won&39;t be able to write the equation of the line in the usual slope-intercept form. The equation yb is the equation of a horizontal line. Therefore, the equation of the line is x 3. . directed line segment calculator