Higher November 2023 Paper 1 Q9
9 Here is the graph of \(\quad y = 0.5x^2 - 6x + 12\)
| Answer | Mark | Comments |
|---|---|---|
| \((x =)\) [2.25, 2.75] and \((x =)\) [9.25, 9.75] | B2 | B1 \((x =)\) [2.25, 2.75] or \((x =)\) [9.25, 9.75] or one or both values identified but not given in correct notation eg \((2.5, 0)\) and/or \((9.5, 0)\) or \(2.5 \lt x \lt 9.5\) or 2.5 and/or 9.5 written on the graph or in working |
Additional guidance
| \(x =\) can be \(x \approx\) | |
| [2.25, 2.75] and/or [9.25, 9.75] with one extra value | B1 |
| [2.25, 2.75] and/or [9.25, 9.75] with more than one extra value | B0 |
| Answer from use of formula or completing the square | B0 |