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2 April, 14:05

If y varies directly as x, and y is 20 when x is 4, whats this relation?

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  1. 2 April, 14:16
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    Y α x

    y = kx

    20 = k*4

    20 = 4k

    20/4 = k

    5 = k

    k = 5

    Relation is y = kx, that is y = 5x
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