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19 October, 19:22

Given: y varies directly as x. If y = 5 when x = 4, what is the value of y when x = 12? A) 9.6 B) 10 C) 12 D) 15

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  1. 19 October, 19:47
    0
    The answer letter D
  2. 19 October, 19:50
    0
    D) 15

    Step-by-step explanation:

    We know the formula for direct variation is

    y=kx

    Substituting y=5 and x=4 we can calculate k

    5=k4

    Divide each side by 4

    5/4 = k

    Now y = 5/4 x

    If x = 12

    y = 5/4*12

    y = 15
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