how do i solve this question

label Algebra
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the value of y varies directly with the value of x to the 3 power, when the value of x is 2 , the value of y is 24. what is the value of y when the value of x is 4

Mar 20th, 2015

y=kx^3

x=2, y=24

24=8k

k=3

relationship is y=3x^3

so, when x=4

y=3(4^3)

y=192........................................................please best me

Mar 20th, 2015

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