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8 September, 10:34

If y varies directly as x, and y = 42 as x = 6, find y for the x-value 3

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  1. 8 September, 12:46
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    Y=42 Y=?

    X=6 X=3

    cross multiply

    so 42times3=6timesY

    126=6Y

    Y=126 divided by 6

    =21
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