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If y varies directly as x, and y=25 as x=5, find y when x=7.

If y varies directly as x, and y=25 as x=5, find y when x=7.
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If y varies directly as x, and y=25 as x=5, find y when x=7.

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User David Hunsicker
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Direct\ variation:y=kx \\ \\ y=kx \\ 25=5k \\ (25)/(5)=k \\ 5=k \\ \\ y=5x \\ y=5(7) \\ y=35
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User Woodchuck
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