4024/12 Oct/Nov 2021, Question 18: Linear Inequalities
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Using the grid and the line AC with equation y = −1/2 x + 5, state the three inequalities whose overlap gives the shaded triangle ABC.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Vertical line through A and B: x = −4, region to the right: x ≥ −4
- 2Horizontal line through B and C: y = 2, region above: y ≥ 2
- 3Region below AC: y ≤ −1/2 x + 5
Answerx ≥ −4, y ≥ 2, y ≤ −1/2 x + 5
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Also searched as: 4024/12/O/N/21 · 4024_w21_qp_12 · 4024 w21 12 · question 18.
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