Question

y varies inversely as twice x. When x = 1, y = 3. Find y when x = 4

Answer 1

\[y=\frac{k}{2x} \]When x = 1 and y = 3, then k = 6.\[y=\frac{6}{2x}\]When x = 4 then\[y=\frac{3}{4}\]