ECZ 2016 · O-Level Paper 1 — Quadratic Functions
For the graph y = 3 − 2x − x², find the coordinates of the turning point.
- A. (1, 0)
- B. (−1, 6)
- C. (−1, 4)
- D. (−1, −4)
Verified working — step 1
The turning point lies on the axis x = −1. Substituting: y = 3 − 2(−1) − (−1)² = 3 + 2 − 1 = …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