### 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 ✎

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.

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

2. Find the equation of the line.

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

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