## Algebra 2 Common Core

To find the slope of a line using two points, $(x_1, y_1)$ and $(x_2, y_2)$, we use the formula $m=\frac{y_2-y_1}{x_2-x_1}$. We substitute these points in to get $m=\frac{1-(-3)}{3-(-1)}=\frac{4}{4}=1$