CC 8EE-6

Use similar triangles to explain why the slope m is the same between any two distinct points on a non-vertical 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.

Grade: 8

Domain: Expressions and Equations

Cluster: Understand the connections between proportional relationships, lines, and linear equations.

All Standards Common Core Standards K-8