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15 June, 20:43

The value of y when x=7

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  1. 15 June, 21:34
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    y = 49

    Step-by-step explanation:

    y ∝ x²

    => y = kx²

    Where k is the constant of proportionality

    k = 1 (We've found this out in the previous question)

    Now,

    y = ? when x = 7

    The above equation becomes:

    => y = (1) (7) ²

    => y = (1) (49)

    => y = 49
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