#  >> K-12 >> K-12 Basics

How to Use Equations to Plot Coordinates on a Graph With a Run or a Rise

The Cartesian coordinate plane is characterized by the x and y axes. Linear and quadratic equations can be plotted onto this coordinate system. It is often beneficial to plot equations, as it allows students to visualize the trends present in them. Linear equations are of the form y = mx + b. In this form, "m" is equal to the slope of the line and "b" is a constant that is equal to the y-intercept.

Instructions

    • 1

      Format the linear equation to the form y = mx + b. In this equation, "x" and "y" are values on the x and y axes, "m" is the slope of the line and "b" is the y-intercept of the line. For example, if the equation is given as 2y - 3x = 5, convert it to y = (3/2)x + (5/2).

    • 2

      Plot the y-intercept onto the graph. In this example, the y-intercept is 5/2. So, plot the point (0, 5/2).

    • 3

      Use the slope of the line to plot the next point. The slope is also referred to as the rise over the run. Start at the y-intercept. Then, rise 5 units on the chart and run 2 units to the right. This yields the point (0+2, (5/2)+(5)), or (2, 15/2).

    • 4

      Connect the two points to create the rest of the line.

Learnify Hub © www.0685.com All Rights Reserved