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26 September, 14:22

If y varies inversely as x and y = 8 when x = 9, find x when y = 12.

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  1. 26 September, 16:02
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    x = 6

    Step-by-step explanation:

    An inverse variation is

    xy = k where k is the constant of variation

    8*9 = k

    72 = k

    xy = k

    Let y = 12

    x*12 = 72

    Divide each side by 12

    12x/12 = 72/12

    x = 6
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