ECZ 2013 · O-Level Paper 1 — Linear Programming
In the diagram, R is the unshaded region. Which three inequalities describe the region R?
- A. x ≥ 0, y ≤ -x, y ≥ x + 8
- B. x ≤ 0, y ≥ -x, y ≤ x + 8
- C. x ≤ 0, y ≤ -x, y ≥ x + 8
- D. x ≥ 0, y ≥ -x, y ≤ x + 8
Verified working — step 1
R is the UNSHADED region - for each boundary, ask which side R sits on, then write that inequality.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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