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Parallel and Perpendicular Lines

Learn about the relationship between parallel and perpendicular lines.

Parallel lines have the same slope but different y-intercepts. Ex:  y= 2x+7 and  y=2x-3 are parallel.

Perpendicular lines have slopes that are the negative reciprocals of each other and may or may not have the same y-intercept. Ex:  y= 4x+3 and y=-\frac{1}{4}x+4 are perpendicular

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