## Algebra: A Combined Approach (4th Edition)

point-slope $m$ $(x_1,y_1)$
The form $y - y_1 = m_1(x - x_1)$ is called point-slope form. When a linear equation in two variables is written in this form, $m$ is the slope of its graph and $(x_1,y_1)$ is a point on the graph.