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**Geometry: Parallel and Perpendicular Lines**

Lesson 5-6 Geometry: Parallel and Perpendicular Lines

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Definition Parallel Lines- two non-vertical lines are parallel if they have the same slope. All vertical lines are parallel.

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Write the slope-intercept form of an equation for the line that passes through (4, -2) and is parallel to the graph of

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Definition Perpendicular Lines- Two non-vertical lines are perpendicular if they product of their slopes is -1. That is, the slopes are opposite reciprocals of each other. Example :

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Write the slope-intercept form for an equation of a line that passes through (4, -1) and is perpendicular to the graph of 7x – 2y = 3.

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Write the slope-intercept form for an equation of a line perpendicular to the graph of 2y + 5x = 2 that passes through (0, 6).

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