ECZ 2017 · GCE Paper 1 — Quadratic Functions
The diagram shows a sketch of the graph of y = x² − 6x + 8, cutting the x-axis at B and C. Find the coordinates of B and C.
- A. B(2, 0) and C(4, 0)
- B. B(−2, 0) and C(−4, 0)
- C. B(0, 2) and C(0, 4)
- D. B(1, 0) and C(8, 0)
Verified working — step 1
Set y = 0: x² − 6x + 8 = 0 factorises as (x − 2)(x − 4) = 0, so x = 2 or x = …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