## Algebra 2 (1st Edition)

The student flipped the values of $x_2$ and $x_1$ in the bottom equation. Using the equation for slope, we find: $$m =\frac{y_2-y_1}{x_2-x_1} =\frac{-1-(-3)}{2-(-4)} = \frac{2}{6}=\frac{1}{3}$$