CPM Homework Banner

Home > AC > Chapter 7 > Lesson 7.3.1 > Problem 7-85


The point  is on a line with slope .  

  1. Find the equation of the line.

  2. Find the coordinates of another point on the line.

    One possible way to solve this problem is to plot the point and use the slope to draw the line.
    Convert to a fraction and remember that the numerator is the rise and the denominator is the run.

    Look at the graph to find the -intercept and use it along with the given slope to complete the equation .

    To find a third point on the line, either find one on your graph, or substitute any number for and evaluate for the value of .

Complete the table in the eTool below to find the equation of the line and additional points.
Click the link at right for the full version of the eTool: 7-85 HW eTool (Desmos)