Lessons

Find the slope of a line on the coordinate plane
In this lesson you will learn to find the slope of a line on a coordinate plane by drawing a right triangle.
Use similar triangles to explain why the slope m is the same between any two distinct points on a nonvertical line in the coordinate plane; derive the equation y = mx for a line through the origin and the equation y = mx + b for a line intercepting the vertical axis at b.
In this lesson you will learn to find the slope of a line on a coordinate plane by drawing a right triangle.