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4 October, 13:30

If y varies directly as x and y=9 when x=3, find the value of y when x=4

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Answers (2)
  1. 4 October, 13:56
    0
    Y = 3x. when x=4, y=3x4 = 12
  2. 4 October, 15:19
    0
    Using direct variation you can find out the y is 3 times x, so using that theory, if x = 4 then y = 12
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