Higher June 2025 Paper 1 Q14
14
(a) Complete the table of values for \(\quad y = 2^x\) [2 marks]
| \(x\) | \(-1\) | 0 | 1 | 2 | 3 |
|---|---|---|---|---|---|
| \(y\) | 1 | 4 |
(b) Draw the graph of \(\quad y = 2^x \quad\) for values of \(x\) from \(-1\) to 3 [2 marks]
| Answer | Mark | Comments | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B2 | oe B1 2 correct values |
Additional guidance
Mark the table only
| Answer | Mark | Comments |
|---|---|---|
| 4 or 5 points plotted correctly | M1 | correct or ft their table in (a) \(\pm \dfrac{1}{2}\) square points may be implied by graph passing through them |
| Correct smooth curve | A1 | \(\pm \dfrac{1}{2}\) square for the five correct points |
Additional guidance
| Ignore extra points plotted with different \(x\)-coordinates | |
| Two points with the same integer \(x\)-coordinate, with the curve going through neither, is choice for plotting of that point and therefore incorrect | |
| Ignore the curve drawn outside (−1, 0.5) and (3, 8) | |
| For tolerance, \(\pm \dfrac{1}{2}\) square can be vertically or horizontally | |
| Ruled straight lines | A0 |