Y varies directly as x. When x = 9, y = 27.
Find y when x = 27.

y = 81

Step-by-step explanation:

Use the direct variation equation, y = kx

Plug in 9 as x and 27 as y, then solve for k

y = kx

27 = k(9)

3 = k

So, the direct variation equation is y = 3x

Plug in 27 as x and solve for y

y = 3(27)

y = 81

So, when x = 27, y = 81