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5 April, 16:20

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

16 10 8 14

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  1. 5 April, 19:19
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    y = k/x

    We want to find k first.

    4 = k/8

    4 (8) = (k/8) (8)

    32 = k

    We now need to find y knowing that k = 32 and x = 2.

    y = k/x

    y = 32/2

    y = 16

    Did you follow?
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