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8 January, 02:04

2. Which equation is the direct linear variation equation for the relationship? y varies directly with x and y = 10 when x = 2 A. y = x + 8 B. y = 5x C. y = x - 8

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  1. 8 January, 03:34
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    Direct linear variation means y = kx where k is a constant

    Inverse variation means y = k/x

    For the first question y = kx

    We are told y = 10 when x = 2

    Therefore 10 = 2k k = 5

    which is 5x not x-8
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