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Bellringer

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Bellringer

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**Parallel and Perpendicular Lines**

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.

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Example 1 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 point m, slope

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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.

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Example 3 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 point m, slope

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

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Warm Up Given: (3, -5) and (-2, 1) on a line. Find each of the following: 1.Slope of the line 2.Point-Slope equation of the line 3.Slope-Intercept equation.

Warm Up Given: (3, -5) and (-2, 1) on a line. Find each of the following: 1.Slope of the line 2.Point-Slope equation of the line 3.Slope-Intercept equation.

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