Foundation November 2018 Paper 2 Q15
15. The diagram below shows the graph of the line \(y = 2x + 1\).
(a)
Write down the coordinates of the point where the line crosses the \(y\)-axis. [1]
( ……… , ……… )
(b)
(i)
Plot the following coordinates on the grid above. [1]
(\(-1\), 5) (0, 5) (4, 5)
(ii) Write down the equation of the line that passes through these points. [1]
(c)
Which of the following points lie on the line \(y = 2x + 1\)?
Circle your answers. [2]
(5,11) (20,21) (20,41) (31,63) (10,31)
| Scheme | Marks | Comments |
|---|---|---|
| (0, 1) | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| (i) All three points correctly plotted | B1 | |
| (ii) \(y = 5\) | B1 | FT from ‘their points’ provided it is a straight line. |
| Scheme | Marks | Comments |
|---|---|---|
| Indicates (5,11) AND (20, 41) AND (31,63) | B2 | B1 for 2 correct co-ordinates and none incorrect, or 3 correct and 1 incorrect. |
| (5) |