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20 October, 08:22

Find the value of y for a given value of x, if y varies directly with x.

If y = 2.52 when x = 8.4, what is y when x = 2.7?

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  1. 20 October, 08:46
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    If y directly varies with x that means that we can write:

    y = k*x

    if we implement y = 2,52 and x = 8,4 we can calculate k

    k = y/x = 0.3

    now we have k and x and need to find y

    y = k*x

    y = 0.3 * 2.7 = 0.81

    Answer is y = 0.81
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