# How to write a formula for slope with 2

Using the Point-Slope Form of a Line Another way to express the equation of a straight line Point-slope refers to a method for graphing a linear equation on an x-y axis. While you could plot several points by just plugging in values of x, the point-slope form makes the whole process simpler. Point-slope form is also used to take a graph and find the equation of that particular line. Based on this, the slope can be expressed as a ratio. In the case of a line's slope, the ratio is the "rise" of the line expressed in relation to the "run" of the line.

You may have to work with slope ratios in an algebra class in high school or college. You also may need to have an understanding of this type of calculation if you work in a career that involves math. Locate two points on a graph.

These points should each be expressed by a set of coordinates. The first coordinate is the "x" coordinate and the second coordinate is the "y" coordinate. For example, if you have 2,3then there is a point at 2 on the x axis and 3 on the y axis. Subtract the second y coordinate from the first one.

For instance, if you have 4,6 and 3,2then you would subtract 2 from 6 to get 4. This is the rise. Sciencing Video Vault Subtract the second x coordinate from the first one. In this example, you would subtract 3 from 4 to get 1. This is the run. Express rise to run as a ratio. In this example, you would write 4: This means that for every 4 units that the line rises, it runs 1 unit. This means that the slope of the line is 4 or 4: Slope and More About the Author Charlotte Johnson is a musician, teacher and writer with a master's degree in education.

She has contributed to a variety of websites, specializing in health, education, the arts, home and garden, animals and parenting.Using the Slope Formula. Do you have trouble remembering all of the algebra formulas, especially the slope formula?

We then write the slope as a fraction. not present, and we must calculate the slope when given two ordered pairs. In this case we must use another special formula. Calculating Slope Given Two Points. The slope is a measure of the steepness of a line, or a section of a line, connecting two points.

In this lesson, you will use several different formulas for slope and learn how those formulas. To write the equation of a line in point-slope form, you use the formula: In that formula, the x sub 1 and the y sub 1 are known coordinates of a point on the line.

The m is the slope of the line. Pick one of the two points and use point-slope form Example: Write the equation of a line in slope-intercept form that goes through the two points (-1, 4) and (2, -2).

a. Write the equation of a line in slope intercept form that passes through two points use the formula to find the slope plug the slope and a point into y = mx + b.

The other format for straight-line equations is called the "point-slope" form. For this one, they give you a point (x 1, y 1) and a slope m, and have you plug it into this formula: y – y 1 = m (x – x 1).

Linear Functions and Equations, Slope-Intercept Form | Zona Land Education