ECZ 2018 · GCE Paper 1 — Coordinate Geometry
A straight line passing through A(3, 2) and B(5, y) has gradient −2. Find the value of y.
- A. −6
- B. −2
- C. 6
- D. 2
Verified working — step 1
Gradient = y₂ − y₁x₂ − x₁, so y − 25 − 3= −2. That gives y − 22= −2, so y − 2 = −4 and y = …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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