SOLUTION: if y varies inversely as the square root of x and y=27 when x=9, what is y when x=16? Find y in terms of x.

Algebra ->  Rational-functions -> SOLUTION: if y varies inversely as the square root of x and y=27 when x=9, what is y when x=16? Find y in terms of x.       Log On


   

Question 414296: if y varies inversely as the square root of x and y=27 when x=9, what is y when x=16? Find y in terms of x.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

y varies inversely as the square root of x  OR y =k/sqrt(x)

y=27 when x=9    27 = k/3  k = 81

what is y when x=16? Find y in terms of x. 

 y =k/sqrt(x)

  y = 81/4 = 20.25