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module 4
31 Instructional days (31 hours)

Linear Equations


Description

In Module 4, students use similar triangles learned in Module 3 to explain why the slope of a line is well-defined. Students learn the connection between proportional relationships, lines, and linear equations as they develop ways to represent a line by different equations (y = mx + b, y – y1 = m (x – x1), etc.).

They analyze and solve linear equations and pairs of simultaneous linear equations. The equation of a line provides a natural transition into the idea of a function explored in the next two modules.

Credits

From EngageNY.org of the New York State Education Department. Grade 8 Mathematics Module 4. Available from engageny.org/resource/grade-8-mathematics-module-4; accessed 2015-05-29.
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