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OpenStudy (anonymous):
If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11? Y=5/18(11) Y=18/5(11) Y=(18)(5)/11 Y=11/(18)(5)
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OpenStudy (shamil98):
direction variation \[\ k = \frac {y}{x} \]
OpenStudy (shamil98):
or \[\ y = kx \]
OpenStudy (shamil98):
find out what k is first
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