### Home > CCA > Chapter 3 > Lesson 3.1.2 > Problem3-22

3-22.

For the line graphed at right: 3-22 HW eTool (Desmos). Homework Help ✎.

Use the eTool below to help solve the problem.
Click the link at right for the full version of the eTool: CCA 3-22 HW eTool

1. Determine the slope.

Start by selecting two points on the line, such as (6, 0) and (0, −2).
Use them to find the rise and the run and then calculate the slope.

Divide the rise, −2, by the run, 6, to determine the slope.

$-\frac{2}{6}\text{ or }-\frac{1}{3}$

1. Find the equation of the line.

Use the y-intercept for b and the slope for m in the equation y = mx + b.