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Question
In which of the following table x and y vary inversely:
| x | 4 | 3 | 6 | 1 |
| y | 9 | 12 | 8 | 36 |
Solution
\[ \text{ If x and y vary inversely, the product xy should be constant } . \]
\[\text{ Here, in one case, product = 6 } \times 8 = 48 \text{ and in the rest, product } = 36\]
\[\text{ Thus, in this case, x and y do not vary inversely .} \]
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