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Mathematics 8 Online
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@Will.H

OpenStudy (will.h):

The slope of the line perpendicular to DE is simply the reciprocal 1st find the slope of DE D(7,4)E(1,-3) Slope = Y2-Y1/X2-X1 Slope = -3-4/1-7 Slope = -7/-6 Slope = 7/6 The slope of the line that is perpendicular to that is the reciprocal Thus it is -6/7

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