JAMB - Mathematics (2024 - No. 3)
y is inversely proportional to x and y = 4, when x = \(\frac{1}{2}\), find x when y = 10
2
10
\(\frac{1}{5}\)
\(\frac{1}{10}\)
설명
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 = \(\frac{2}{10} = \frac{1}{5}\)