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25 October, 00:07

If y varies inversely as x, and y = 4 as x = 8, find y for the x-value of 2.

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  1. 25 October, 00:33
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    For inverse variation, y = k/x

    4 = k/8

    k = 4 x 8 = 32

    y = 32/x

    When x = 2, y = 32/2 = 16.
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