If the variable a varies inversely as b, which of the following statements must be true?
A. a + b is a constant.
B. a - b is a constant.
C. is a constant.
D. ab is a constant.
Answer:D
If the variable a varies inversely as b, which of the following statements must be true?
A. a + b is a constant. B. a - b is a constant. C. is a constant. D. ab is a constant.
Explanation: D