If x and y are directly proportional, then which of the following is correct?
A. x+y=constant
B. x-y=constant
C. xy=constant
D. x/y=constant
Answer:D
If x and y are directly proportional, then which of the following is correct?
A. x+y=constant B. x-y=constant C. xy=constant D. x/y=constant
Explanation: x∝y