# How do you find the slope for (0,0); (-2,7)?

The slope, $m = - \frac{7}{2}$ .
$m = \frac{{y}_{2} - {y}_{1}}{{x}_{2} - {x}_{1}}$,
where $m$ is the slope and ${x}_{1}$ and ${y}_{1}$ are a point on the line, and ${x}_{2}$ and ${y}_{2}$ are another point on the line. For the purposes of answering this question, Point 1=$\left(0 , 0\right)$ and Point 2=$\left(- 2 , 7\right)$.
$m = \frac{7 - 0}{- 2 - 0} = \frac{7}{-} 2 = - \frac{7}{2}$