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29 April, 12:14

Assume that y varies inversely with x. if y=27 when x=12, find x when y=-12.

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  1. 29 April, 12:34
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    Y varies inversely with x, means y=k/x

    27=k/12 = > k=27*12=324

    so the equation is y=324/x

    when y=-12, - 12=324/x = > x=324 / (-12) = - 27
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