4MA0 Foundation June 2013 Paper 2 Q23
23
(a) Solve the inequalities \(\quad -6 \leqslant 3x \lt 9\) (2)
(b) \(n\) is an integer.
Write down all the values of \(n\) which satisfy \(\quad -6 \leqslant 3n \lt 9\) (2)
Write down all the values of \(n\) which satisfy \(\quad -6 \leqslant 3n \lt 9\) (2)
| Scheme | Marks |
|---|---|
| \(\dfrac{-6}{3} \leqslant x \lt \dfrac{9}{3}\) | M1 |
| \(-2 \leqslant x \lt 3\) | A1 |
| (2) |
Notes
M1: M1 for \(\dfrac{-6}{3} \leqslant x\) or \(x \lt \dfrac{9}{3}\)
A1: SC B1 for \(-2 \lt x \lt 3\)
| Scheme | Marks |
|---|---|
| −2, −1, 0, 1, 2 | B2 |
| (2) |
Notes
B2: B1 for five correct values and one wrong value or four correct values with no wrong value