O-LevelMathematicsAlgebra and graphs4024/12 · Oct/Nov 2022 · Q123 Marks
Represent the inequality -4 < x < 2 on the number line below. [Number line from -5 to 6]
- (a)Represent the inequality -4 < x < 2 on the number line below. [Number line from -5 to 6][1]
- (b)Solve the inequality. 10-n ≤ 2n-5[2]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2022). The mark or mark type is shown in brackets.
- [1] Open circle at -4, open circle at 2, line connecting them.
- [2] n > 5 or 5 < n final answer
- M1 for correct isolation of terms in n e.g. 10 + 5 [...] 2n + n oe or better
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