y varies directly as the square of x when x=2 then y =16 find y when x=8

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y varies directly as the square of x when x=2 then y =16 find y when x=8

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Calantha 4 years 2021-08-16T10:11:55+00:00 1 Answers 9 views 0

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  1. Bo
    0
    2021-08-16T10:13:43+00:00
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    Answer:   y= 64  

    Step-by-step explanation:

    If y is 16 when  x is 2  This means if  x is 8 y will be 64.

    Set up the proportional equation

    \frac{2}{16} = \frac{8}{y}     Cross multiply  

    2y = 128

    y= 64

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