Mathematics 0580 · IGCSE · Ratio and proportion

Ratio and proportion — practice question

(a)[3]

Find the value of $y$ for $x = 124$.

(b)[1]

Since $F$ is inversely proportional to the square of $d$, explain what happens to $F$ if $d$ is halved.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The formula is $y=k\times\sqrt[3]{x+1}$.” …