Question

Direct Variation: If y = 20, when x = 8, find y when x = 40.

A. 10

B. 80

C. 50

D. 100

Answer 1

The answer would be D

Answer 2

D

Explanation:

X is increased by a factor of 5, so y should be multiplied by 5 as well. So y = 20*5=100