ECZ 2026 · GCE Paper 1 — Linear Programming
Write the four inequalities that define the unshaded region R on the XOY plane below.
- A. x ≥ 2; y ≤ 5; y ≥ -1; x + y ≥ 9
- B. x ≤ 2; y ≤ 5; y ≥ -1; x + y ≤ 9
- C. x ≥ 2; y ≤ 5; y ≥ -1; x - y ≤ 9
- D. x ≥ 2; y ≤ 5; y ≥ -1; x + y ≤ 9
Verified working — step 1
Each boundary gives one inequality: name the line, then decide which side R is on (the hatching marks the side that is NOT wanted). Every line is solid, so each inequality includes "equal to".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.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question