Question

Which of the following statements are true for direct proportionality?

• A. If the value of one increase then the value of other will decrease.
• B. If the value of one increase then the value of other will increase.
• C. The ratio of two directly proportional quantities is always constant.
• D. Product of two directly proportional is constant.

Answer 1

Answer: (B), (C)

The correct options are
B If the value of one increase then the value of other will increase.
C The ratio of two directly proportional quantities is always constant.

If the quantities are directly proportional then they must satisfy the following conditions:-

1. The initial value should be counted as zero(0).
2. The ratio of two directly proportional quantities is always constant.
3. If the value of one increase then the value of other will increase.