If y varies directly as x and y equals 20 when x=5 then what is y when x is 8

y = 32

Step-by-step explanation:

If y varies directly as x

y = kx

y equals 20 when x=5

20 = k (5)

We can solve for k

Divide each side by 5

20/5 = 5k/5

4 = k

y = ? when x is 8

y = 4x

y = 4 (8)

y = 32