Y is directly related to X, and Yis 81 when X is 27.

The constant of variation is

3

Step-by-step explanation:

A direct variation is of the form

y = kx

We know x and y so we can find k

81 = k * 27

Divide each side by 27

81/27 = 27k/27

3=k

The constant of variation is 3