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14 August, 10:39

What is the constant of variation, k, of the line y = kx through (3,18) and (5,30) ?

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  1. 14 August, 12:56
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    Y - 18 = (30 - 18) / (5 - 3) (x - 3)

    y - 18 = 12/2 (x - 3)

    y - 18 = 6 (x - 3) = 6x - 18

    y = 6x

    The constant of variation (k) is 6.
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