Question

Y is directly related to X and Y is 81 when X is 27. What is the constant of variation?

Answer 1

Constant of variation is `3`

Explanation:

`y prop x or y = kx ; y=81 , x=27 :. 81 = k*27`or

`k = 81/27=3 :. y=3x`

Constant of variation is `k=3` and variation equation is

`y=3x` [Ans]