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15 February, 22:33

Suppose that y varies directly as x and y=-9 when x=3. Find the value of x when y=18

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  1. 16 February, 00:47
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    Hello,

    y=k*x

    if x=3 then y=-9 = = >-9=k*3==>k=-3

    if y=18 then 18=-3*x==>x=-6

    Answer : x=-6
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