1MA0 Higher November 2013 Paper 1 Q21
21 \(y\) is directly proportional to the square of \(x\).
When \(x = 3\), \(y = 36\)
Find the value of \(y\) when \(x = 5\) (4)
| Answer | Mark | Notes |
|---|---|---|
| 100 | 4 | M1 \(y = kx^2\) oe or \(36 = k \times 3^2\) A1 \(k = 4\) M1 (dep on M1) (\(y =\)) ‘4’\(\times 5^2\) A1 cao |