ECZ 2025 · GCE Paper 1 — Coordinate Geometry
Use the diagram. C = (0, 4) and D = (6, 0). Line AB is perpendicular to CD and crosses the x-axis at (1, 0). Find the equation of line AB.
- A. y = (23)x - 1
- B. y = -(32)x + 32
- C. y = (32)x - 32
- D. y = -(23)x + 4
Verified working — step 1
Gradient of CD = 0 - 46 - 0The 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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