ECZ 2010 · O-Level Paper 1 — Linear Programming
Triangle PQR has vertices P(-1, 2), Q(2, 2) and R(-1, -1). Write down the three inequalities which define the region inside the triangle.
- A. x ≤ -1, y ≥ 2, y ≤ x
- B. x ≥ -1, y ≤ 2, y ≥ x
- C. x ≥ -1, y ≥ 2, y ≤ x
- D. x ≤ -1, y ≤ 2, y ≥ x
Verified working — step 1
One inequality per edge: write each edge's equation, then test an interior point to fix the signs.The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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