Higher November 2020 Paper 2 Q21
21
(a) Circle the point that is on the graph of \(\quad y = \dfrac{1}{x}\) [1 mark]
- (−1, 1)
- (0.3, 3)
- (0.8, 0.2)
- (2.5, 0.4)
(b) Leo wants to draw the graph of \(\quad y = 2^x \quad\) for values of \(x\) from 0 to 4
Here is his graph.
Make one criticism of his graph. [1 mark]
| Answer | Mark | Comments |
|---|---|---|
| (2.5, 0.4) | B1 |
| Answer | Mark | Comments |
|---|---|---|
| Valid criticism | B1 | eg the graph should go through (4, 16) |
Additional guidance
| (4, 15) should be (4, 16) | B1 |
| It should be (4, 16) | B1 |
| Graph should end at \((y =)\) 16 | B1 |
| (4, 15) is not on the graph | B1 |
| The point at \(x = 4\) is wrong | B1 |
| The point at 4 is wrong | B0 |
| \(2^4\) is 16 | B1 |
| \(4^2\) is 16 | B0 |
| The last point is wrong | B1 |
| One of the points is wrong | B0 |
| Graph isn’t high enough | B0 |