ECZ 2016 · O-Level Paper 1 — Linear Programming
On the XOY plane below, region R is unshaded. Write the four inequalities that define the region R.
- A. x ≤ 2, y ≤ 3, y ≥ 7, x + y > 12
- B. x ≥ 2, y ≥ 3, y ≤ 7, x + y > 12
- C. x ≥ 3, y ≥ 2, y ≤ 7, x + y < 12
- D. x ≥ 2, y ≥ 3, y ≤ 7, x + y < 12
Verified working — step 1
Each boundary gives one inequality - test one interior point in all four, and match the strict sign to the dashed line.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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