SOLUTION: If y varies inversely as the square of x and y = 4 when x = 3, find y when x is 2.

Algebra ->  Equations -> SOLUTION: If y varies inversely as the square of x and y = 4 when x = 3, find y when x is 2.      Log On


   

Question 751603: If y varies inversely as the square of x and y = 4 when x = 3, find y when x is 2.
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Formula:
y varies inversely as the square of x
y = k/x^2 (k is the constant of variation)

Find k 4 = k/3^2
4 = k/9
k = 36
Formula: y = 36/x^2
y = 36/2^2
y = 36/4
y = 9