ECZ 2011 · O-Level Paper 1 — Linear Programming
In the diagram, R is the unshaded region. Which three inequalities describe R?
- A. x ≥ 3, y ≤ x + 2, y ≥ -x + 2
- B. x ≤ 3, y ≤ x + 2, y ≥ -x + 2
- C. x ≤ 3, y ≥ x + 2, y ≤ -x + 2
- D. x ≤ 3, y ≤ x + 2, y ≤ -x + 2
Verified working — step 1
R is the UNSHADED region - for each boundary, ask which side R sits on; the hatching marks the rejected side.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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