Higher November 2022 Paper 1 Q16
16 A graph has the equation \(\quad y = x^2 + px + r \quad\) where \(p\) and \(r\) are constants.
The graph passes through the points (0, 4), (1, 3) and \((8, w)\)
Work out the value of \(w\). [4 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(4 = 0^2 + p \times 0 + r\) or \(r = 4\) | M1 | oe equation may be implied |
| \(1^2 + p\ (\times 1) +\) their \(4 = 3\) or \(p = -2\) | M1 | oe equation allow their 4 to be \(r\) |
| \(8^2 + (\text{their } {-2}) \times 8 +\) their 4 or \(64 - 16 + 4\) | M1dep | oe dep on M1M1 do not allow their 4 to be \(r\) |
| 52 | A1 |