Week Six Concept Check - one of the lines is undefined...

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Week Six Concept Check There are a few way to check if two lines are perpendicular. First if the slopes of both lines are defined, then they are perpendicular, if the product of two slopes is negative one (-1). If the slope of the
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Unformatted text preview: one of the lines is undefined, vertical, and the other is zero, horizontal, then they are also perpendicular. Loretta Campbell July 20 th , 2011...
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