Question

Y is directly related to x and y is 81 when x is 27 the constant of.variation is

Answer 1

k = 3

Explanation:

Given that y and x are directly related 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