Proportional: y = mx, y = 4x, y = 1/2x, y = -3x, y = .5x + 0, , , , , , Non-proportional: y = mx + b, y = -7x + 2, y = 3/4x - 5, y = 1/2x + 3, y = 9x + 14, , , , , ,

Proportional vs. Non-proportional Relationships

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