ECZ 2023 · GCE Paper 1 — Quadratic Functions
The diagram shows the graph of the function y = x2 + 2x − 15. The curve cuts the x-axis at A and B and the y-axis at C. Find the coordinates of B and C.
- A. B(3, 0) and C(0, −15)
- B. B(−5, 0) and C(0, −15)
- C. B(3, 0) and C(0, 15)
- D. B(5, 0) and C(0, −15)
Verified working — step 1
Each axis has its own substitution: y = 0 for the x-crossings, x = 0 for the y-crossing.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