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18 September, 11:54

If y = - 5 when x=2, find y when x=8.

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  1. 18 September, 12:22
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    Y = kx

    -5 = k (2)

    k = - 5/2

    when x = 8

    y = kx

    y = - 5/2 * 8

    y = - 20

    answer is y = - 20 when x=8
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