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31 October, 14:19

The equation of line CD is (y-3) = - 2 (x-4). What is the slope of a line perpendicular to line CD?

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  1. 31 October, 17:25
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    Y-y1=m (x-x1)

    slope is m

    given

    y-3=-2 (x-4)

    slope=-2

    perpendicular lines have slopesthat multiply to - 1

    -2 times?=-1

    divide by - 2

    ?=1/2

    slope is 1/2
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