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Published byAlex Myers Modified over 3 years ago

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Bellringer

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Chapter 6: Section 5 Parallel and Perpendicular Lines

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Parallel Lines Lines in the same plane that never intersect Nonvertical lines are parallel if they have the same slope and different y- intercepts. Any two vertical lines are parallel. Lines in the same plane that never intersect Nonvertical lines are parallel if they have the same slope and different y- intercepts. Any two vertical lines are parallel.

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Example 1 Check to see if the equations are parallel. Check to see if the equations are parallel.

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Example 2 Write and equation for the line that contains (5, 1) and is parallel to m, slope point

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Perpendicular Lines Lines that intersect to form right angles Two lines are perpendicular if their slopes are negative reciprocals. Their product is -1. Vertical and horizontal lines are perpendicular. Lines that intersect to form right angles Two lines are perpendicular if their slopes are negative reciprocals. Their product is -1. Vertical and horizontal lines are perpendicular.

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Example 3 Check to see if the equations are perpendicular. Check to see if the equations are perpendicular.

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Example 4 Write and equation for the line that contains (0, -2) and is perpendicular to m, slope point

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Your Assignment Page 314 #s 4-40 multiples of 4 #31 #42 Page 314 #s 4-40 multiples of 4 #31 #42

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