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10 May, 16:38

The variable x and y are directly proportional and y=2 when x=3. what is the value of y when x=9?

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  1. 10 May, 18:30
    0
    Y = kx is the direct variation equation, where k is the constant of variation.

    Find k.

    2 = k * 3

    2/3 = k

    Write the variation equation.

    y = (2/3) x

    Plug in new value.

    y = (2/3) * 9

    y = 6
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