Set up the slope formula. You may already be familiar with the ymxb form called the slope-intercept form of the equation of a line. Understand what slope is and how to calculate slope when given a graph.
It is the same equation in a different form.
So point x 1 y 1 is actually at 0 b and the equation becomes. The coefficient of the x term is the slope of the line. Finding the Slope with Two Points 1. This gives you y 3x b.