### Home > AC > Chapter 5 > Lesson 5.1.3 > Problem5-30

5-30.

1. Find the equation of the line graphed above.

Use the $y\text{-}$ntercept and the growth rate to write the equation of the line at right.

2. What are its $x\text{-}$ and $y\text{-}$intercepts?

Remember that the $x\text{-}$intercept is the point on the graph where $y=0$ and that the $y\text{-}$intercept is the point where $x=0$.

3. On your own graph paper, graph the line.

4. On the same set of axes, graph a line parallel to the line graphed at right, but through the origin $(0,0)$. Find the equation of this new line.

Remember that parallel lines have the exact same growth rate.

Plug in the point given $(0,0)$ into the basic equation $y=mx+b$ and simplify to find the equation of the line.

$m=\text{the growth rate}$
$b=\text{the}\ y\text{-intercept}$