4024/12 May/Jun 2026, Question 10: Reflection
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
On a grid from −4 to 4, triangle A has vertices (−3, 1), (−3, 2) and (−1, 1). Draw its image after reflection in the line y = x.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Reflecting in y = x swaps the coordinates: (a, b) → (b, a)
- 2(−3, 1) → (1, −3), (−3, 2) → (2, −3), (−1, 1) → (1, −1)
- 3Plot and join (1, −3), (2, −3), (1, −1)
AnswerCorrect triangle with vertices (1, −1), (1, −3), (2, −3)
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Also searched as: 4024/12/M/J/26 · 4024_s26_qp_12 · 4024 s26 12 · question 10.
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