4 Parallel and Perpendicular Lines Chapter 6: Section 5Parallel and Perpendicular Lines
5 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.
6 Example 1Check to see if the equations are parallel.
7 Example 2Write and equation for the line that contains (5, 1) and is parallel topointm, slope
8 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.
9 Example 3Check to see if the equations are perpendicular.
10 Example 4Write and equation for the line that contains (0, -2) and is perpendicular topointm, slope
11 Your AssignmentPage 314#’s 4-40 multiples of 4#31#42
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