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Proportional vs. Not Proportional

8th Grade

Texas Essential Knowledge and Skills (TEKS): 8.5.E

solve problems involving direct variation;

Texas Essential Knowledge and Skills (TEKS): 8.5.F

distinguish between proportional and non-proportional situations using tables, graphs, and equations in the form y = kx or y = mx + b, where b ≠ 0;

Texas Essential Knowledge and Skills (TEKS): 8.5.H

identify examples of proportional and non-proportional functions that arise from mathematical and real-world problems; and

Georgia Standards of Excellence (GSE): 8.PAR.4.1

Use the equation y = mx (proportional) for a line through the origin to derive the equation y = mx + b (non-proportional) for a line intersecting the vertical axis at b.

8th Grade Math - Proportional vs. Not Proportional Lesson

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