NECO Mathematics 2007 Objective — Question 9
Question 9 of 60 from the National Examinations Council (NECO) Mathematics 2007 Objective paper, with the correct answer and a full explanation.
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Given two quantities x and y such that when x increases, y decreases and vice versa, the two quantities are said to be
- A. directly proportional
- B. inversely proportionalCorrect
- C. jointly proportional
Explanation
When one quantity increases while the other decreases, the relationship between them is said to be inverse (inversely proportional).
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