ECZ 2018 · O-Level Paper 1 — Linear Programming
On the XOY plane below, region R is unshaded. Write the three inequalities that define the region R.
- A. x ≥ -3; y ≤ (23)x + 2; y ≤ -x + 7
- B. x ≤ -3; y ≥ (23)x + 2; y ≤ -x + 7
- C. x ≥ -3; y ≥ (23)x + 2; y ≥ -x + 7
- D. x ≥ -3; y ≥ (23)x + 2; y ≤ -x + 7
Verified working — step 1
The vertical boundary is x = -3 and R is to its right: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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