Mathematics 4024 · O Level · Ratio and proportion

Ratio and proportion — practice question

$y$ varies inversely with the cube of $x$. When $x = \frac{1}{2}$, $y = 24$.

(a)[2]

Determine an expression for $y$ in terms of $x$.

(b)[1]

Find the value of $y$ when $x = \frac{1}{3}$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$\frac{3}{x^3}$ ” …