# Question #97270

Apr 12, 2017

Equation is already in $y = m x + b$ format. Just graph using the slope and y-intercept.

#### Explanation:

So the equation ($y = \frac{9}{4} x - 4$) is already in $y = m x + b$ format.
=> Where $\frac{9}{4}$ is the slope, $m$.
=> Where $- 4$ is the y-intercept, $b$.

All we have to do is graph it.

graph{9/4x-4 [-10, 10, -5, 5]}

I think what you have difficulty with, is the slope. You can use the $\text{rise"/"run}$ method to graph the slope.

Basically, all numerators are $\text{rise}$, and all denominators are $\text{run}$. So in this case, starting at $\left(0 , - 4\right)$, move up $9$ points, then right $4$ points, giving us $\left(4 , 5\right)$.

You also do the opposite: starting at $\left(0 , - 4\right)$, move down $9$ points, then left $4$ points, giving us $\left(- 4 , - 13\right)$.

Connect them with a straight line and BAM!

Hope this helps :)