June 2019 Paper 2 Q3
3 \(-2 \lt a \lt 0 \qquad\) and \(\qquad -1 \lt b \lt 1\)
Tick the correct box for each statement. [4 marks]
| Always true | Sometimes true | Never true | |
|---|---|---|---|
| \(a^2 \lt 0\) | ☐ | ☐ | ☐ |
| \(-1 \lt b^3 \lt 1\) | ☐ | ☐ | ☐ |
| \(\dfrac{b}{a} \lt 0\) | ☐ | ☐ | ☐ |
| \(a - b \gt 0\) | ☐ | ☐ | ☐ |
| Answer | Mark | Comments | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B4 | B1 for each correct row |
Additional guidance
| Two boxes ticked in a row with other 3 rows fully correct | B3 |
| One row correct, two rows blank, all three boxes ticked in another row | B1 |
| Only crosses used instead of ticks eg cross in all 4 correct boxes with all other boxes blank | B4 |
| Ticks and crosses used – only mark the ticks for that row eg Top row has X X ✓ scores B1 for that row Second row has X ✓ X scores B0 for that row |