Question

Y is directly related to X, and Y is 81 when X is 27. The constant of variation is a0.

Answer 1

3

Explanation:

Since y is directly related to x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 81 when x = 27

k =
`(y)/(x)` =
`(81)/(27)` = 3