Common Core State Standard: 8.EE.6

Grade 8
Subject MATH
Domain Expressions & Equations
Theme Understand the connections between proportional relationships, lines, and linear equations
Standard 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.
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