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10 April, 21:46

If y = 4when x = 10 find y when x=2

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  1. 11 April, 00:16
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    Since y=4, when x=-2, plug it into the formula above, and you have

    y=kx

    4=k (-2)

    Solve for k, k=-2

    Now, y = - 2x, so if x=30 y=-2*30=-60.
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