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9 February, 04:33

If y varies directly with x and y = - 7 when x = - 1, find x when y = - 84.

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  1. 9 February, 04:37
    0
    Set up the problem like this:

    y1/x1 = y2/x2

    -7/-1 = - 84/x2

    then use cross multiplication to solve the problem
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