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Mathematics 7 Online
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)

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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