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5 August, 20:20

If y varies directly as x, and y = - 18 as x = - 2, find y for the x-value of 20.

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  1. 5 August, 20:36
    0
    Hello,

    y=k*x

    -18=k * (-2) = = = >k=9

    if x=20

    y=9*20=180
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