Correct Answer: Option C

Explanation

y ∝ \(\frac{1}{x}\)

y = \(\frac{k}{x}\)

y = 4, x = \(\frac{1}{2}\), find x when y = 10

4 = \(\frac{k}{\frac{1}{2}}\)

k = 2

Therefore, x = \(\frac{2}{10} = \frac{1}{5}\)

There is an explanation video available below.

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