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

User Philibert Perusse
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Appropriate equation for direct variation: y = mx

Here, 25=m(5), so that m = 5 and
y=5x

Then, if x=25, y=5(25) = 125 (answer)
User Vageli
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