## 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 $m=\frac{y_2-y_1}{x_2-x_1}$. Substituting the points into the formula gives : $m=\frac{-1-6}{8-1}=\frac{-7}{7}=-1$