Higher June 2023 Paper 3 Q7
7
(a) Complete the table of values for \(\quad y = x^2 + 2x\) [2 marks]
| \(x\) | –3 | –2 | –1 | 0 | 1 |
|---|---|---|---|---|---|
| \(y\) | 3 | –1 | 0 |
(b) Draw the graph of \(\quad y = x^2 + 2x \quad\) for values of \(x\) from \(-3\) to 1 [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| 0 and 3 in the correct positions | B2 | B1 0 or 3 in the correct position |
Additional guidance
| B2 |
| Answer | Mark | Comments |
|---|---|---|
| Plots at least three points correctly | M1 | correct or ft their table in (a) \(\pm\dfrac{1}{2}\) small square points may be implied by graph passing through them |
| Correct graph drawn through the five correct points | A1 | \(\pm\dfrac{1}{2}\) small square smooth quadratic curve |
Additional guidance
| Correct graph drawn without plotting the correct points | M1A1 |
| Ignore any extra points plotted | |
| Ignore any part of graph drawn for \(x \lt -3\) or \(x \gt 1\) | |
| Ruled straight lines | A0 |