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# Slopes of Parallel and Perpendicular lines - PowerPoint PPT Presentation

Slopes of Parallel and Perpendicular lines. Slopes of Parallel Lines. Two nonvertical lines are parallel iff their slopes are equal. Slopes of Perpendicular Lines. Two nonvertical lines are perpendicular iff the product of their slopes is -1. Are the two lines parallel?.

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## PowerPoint Slideshow about ' Slopes of Parallel and Perpendicular lines' - yoshiko-emiko

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### Slopes of Parallel and Perpendicular lines

• Two nonvertical lines are parallel iff their slopes are equal

• Two nonvertical lines are perpendicular iff the product of their slopes is -1.

What is the equation in slope-intercept form for the line parallel to that contains ( -2, -2) ? Perpendicular?

Are the two lines perpendicular? parallel to that contains ( -2, -2) ? Perpendicular?

Hwk parallel to that contains ( -2, -2) ? Perpendicular?: p 201, #7-25 odd, 31