ECZ 2020 · GCE Paper 1 — Quadratic Functions
The diagram below is the graph of y = -4(x - 12)2 + 9. Find the (i) x co-ordinates of A and B.
- A. A = -1 and B = 1
- B. A = -2 and B = 1
- C. A = -1 and B = 2
- D. A = 1 and B = -2
Verified working — step 1
At the x-axis, y = 0.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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