Review what you know about graphs by answering the following questions.

1. Find the equation of the line graphed above.

   Hint (a):

   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?

   Hint (b):

   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.

   Hint 1(d):

   Remember that parallel lines have the exact same growth rate.

   Hint 2(d):

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

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