Foundation January 2019 Paper 1 Q12
12 On the grid, draw the graph of \(y = 2x - 3\) for values of \(x\) from \(-1\) to 4
(3)
| Scheme | Marks |
|---|---|
| (−1, −5), (0, −3), (1, −1), (2, 1), (3, 3), (4, 5) Answer: Correct line | B3 |
| (3) | |
| (3 marks) |
Notes
B3: for a correct line between \(x = -1\) and \(x = 4\)
If not B3 then B2 for
a line segment through at least 3 of (−1, −5), (0, −3), (1, −1), (2, 1), (3, 3), (4, 5)
or
all points correctly plotted
or
a line drawn through (0, −3) and with clear intention to use gradient of 2
E.g. a line through (0, −3), (0.5, −1)
If not B2 then B1 for
at least 2 correct points stated or plotted (ignore incorrect points)
or
a line drawn with a positive gradient through (0, −3) but not a line through (0, −3) and (2, 0)
or
a line with gradient 2