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Y varies directly as the square root of x


Sagot :

Step-by-step explanation:

Since y varies directly as the square root of x, y = k√x, for some constant, k. x changes from 9 to 19, which means it is multiplied by 2.111. Since y varies directly as the square root of x, y should be multiplied by the square root of 2.111, or around 1.453.