4400 Higher November 2004 Paper 3 Q6
6
(a) On the grid, draw the line \(x + y = 4\). (1)
(b) On the grid, show clearly the region defined by the inequalities \[x + y \geqslant 4\] \[x \leqslant 3\] \[y \lt 4\] (4)
| Scheme | Marks |
|---|---|
| Correct line | B1 |
| (1) |
Notes
B1: thro’ \(\geqslant\) 3 pts ± 2 mm
| Scheme | Marks |
|---|---|
| \(x = 3\) OR \(y = 4\) drawn | B1 |
| Correct region clear | B3 |
| (4) | |
| (5 marks) |
Notes
B3: B1 \(x + y \geqslant 4\)
B1 \(x \leqslant 3\) OR \(y \lt 4\)
B1 if correct region clear.
ft his (a) and/or his \(x = 3\) & \(y = 4\) so long as vert & horiz pair