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Mathematics 11 Online
OpenStudy (anonymous):

Variable y varies directly with x2, and y = 72 when x = 6. What is the value of y when x = 4? y=

OpenStudy (anonymous):

\[=\frac{ 72 }{ 6 }\]\[=12\]Therefore,y is 12 times bigger than x

OpenStudy (anonymous):

\[y=12\times4\]\[y=48\]

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