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Slopes of Parallel and
Perpendicular Lines
Perpendicular Line
Equation
Find Slope-Intercept Form
Perpendicular Line
A Line Perpendicular
to Y X 7
Parallel Lines &
Their Slopes
Finding Slopes
of Perpendicular Lines
Perpendicular Lines
Examples
Perpendicular Line
Formula
Perpendicular Lines
Using Points
7:26
Khan Academy
Parallel & perpendicular lines from graph
The slopes of parallel lines are equal, and the slopes of perpendicular lines are opposite reciprocals. This is a worked example of determining whether given lines are parallel or perpendicular.
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