O-LevelMathematicsAlgebra and graphs4024/12 · May/June 2018 · Q183 Marks
The region R is defined by the inequalities 2 ≤ x ≤ 8, 5 ≤ y ≤ 10, x + y ≥ 10. On the diagram, shade and label the region R.
- The region R is defined by the inequalities 2 ≤ x ≤ 8, 5 ≤ y ≤ 10, x + y ≥ 10. On the diagram, shade and label the region R.[3]
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 (May/June 2018). The mark or mark type is shown in brackets.
- [1] B1 for line x + y = 10
- [1] B1 for at least three correct lines from x = 2, x = 8, y = 5, y = 10
- [1] Correct region shaded bounded by x = 2, x = 8, y = 5, y = 10 and x + y = 10
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