4MA0 Foundation January 2017 Paper 1R Q16
16 On the grid, draw the graph of \(y + 2x = 6\) for values of \(x\) from –2 to 4
(4)
| Scheme | Marks | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Answer: \(y = 6 - 2x\) drawn from \(x = -2\) to \(x = 4\) | B4 | ||||||||||||||||
| B3 | |||||||||||||||||
| B2 | |||||||||||||||||
| B1 | |||||||||||||||||
| (4) | |||||||||||||||||
| (4 marks) |
Notes
B4: For a correct line between \(x = -2\) and \(x = 4\)
B3: For a correct straight line segment through at least 3 of (−2, 10) (−1, 8) (0, 6) (1, 4) (2, 2) (3, 0) (4, −2)
OR for all of (−2, 10) (−1, 8) (0, 6) (1, 4) (2, 2) (3, 0) (4, −2) plotted but not joined
B2: For at least 2 correct points plotted
B1: For at least 2 correct points stated (may be in a table) OR
for a line drawn with a negative gradient through (0, 6) OR
a line with gradient −2