## 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 $m=\frac{y_2-y_1}{x_2-x_1}$. She used the formula $m=\frac{y_1-y_2}{x_2-x_1}$.
To find the slope of a line using two points, $(x_1, y_1)$ and $(x_2, y_2)$, we use the formula $m=\frac{y_2-y_1}{x_2-x_1}$. She used the formula $m=\frac{y_1-y_2}{x_2-x_1}$.