Video by Julie Harland http://yourmathgal.com This is part 12 of a series of videos about graphing lines. Continuation of the ideas from Graphing 11: More examples showing how to find the slope of a line passing through two points by using the algebraic formula for slope.<br />For more great math videos visit: www.youtube.com/user/videosbyjulieharland/videos<br />Aligned to Common Core State Standard: 8.EE.6
Graphing Lines Part 12
Subject
Math — Expressions and Equations
Grade Level
Grades 6-12
Standards Alignment
Common Core State Standards
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Graphing Lines Part 12
Standards
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.
