Higher June 2024 Paper 6 Q15
15 \(y\) is inversely proportional to \(x^3\).
\(y = 4\) when \(x = 12\).
Find a formula linking \(x\) and \(y\). [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(y = \frac{6912}{x^3}\) oe | 3 | M1 for \(y = \frac{k}{x^3}\) oe soi by \(4 = \frac{k}{12^3}\) oe B1 for [\(k =\)] 6912 | |