Mathematics 0580 · IGCSE · Ratio and proportion

Ratio and proportion — practice question

$y$ varies directly with the square root of $(x + 2)$. When $x = 7$, $y = 2$.
(main)[3]

Calculate $y$ for $x = 98$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Apply the model $y = k\sqrt{x + 2}$” …

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI