ECZ 2017 · O-Level Paper 1 — Coordinate Geometry
The gradient of the line joining the points (−2, k) and (k, −14) is 2. Calculate the value of k.
- A. 6
- B. −10
- C. −2
- D. −6
Verified working — step 1
Substitute both points into the gradient formula, keeping the subtraction order consistent top and bottom.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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