Concept explainers
Determine whether the line given by
is parallel to the line given by
Two lines are perpendicular if they intersect at a right angle. If one line is vertical and another is horizontal, they are perpendicular. There are other instances in which two lines are perpendicular.
Consider a line
as shown at left, with slope
This can help us determine which lines are perpendicular.
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Elementary and Intermediate Algebra: Concepts and Applications (7th Edition)
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