Question

The discount on an item is directly proportional to the original price of an item. The discount of a $64 item is $16. Which graph represents this direct-variation relationship?

Answer 1

i got this question on usatestprep the answer is A

Explanation:

Answer 2

Direct variation means y=kx so

16=64k, k=16/64=1/4

d(p)=x/4 (the discount as a function of the original price)