19-10-2021
Mathematics

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Suppose y varies directly as x, and y=14 when x=4. What is the value of y when x=9

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VirαtKσhli VirαtKσhli

19-10-2021

Given :-

y varies directly as x, and y=14 when x=4.

To Find :-

the value of y when x=9 .

Solution :-

According to Question ,

y = kx ( k is constant )

When y = 14 and x = 4 ,

14 = k(4)
k = 14/4
k = 7/2

When x = 9 ,

y = 7/2*9
y = 63/2
y = 31.5

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