Question

Y varies inversely with the square of x. When x=4, then y=3. Find y when x=2

Answer 1

y = 6

Explanation:

y=
`(1)/(x)`

3 =
`(1)/(4)`k Solve for k by multiplying both sides by 4

12 = k

y =
`(1)/(2)`(12)

y =
`(12)/(2)`

y= 6