ECZ 2023 · O-Level Paper 1 — Relations and Functions
The functions g and h are defined by g(x) = 3x + 1 and h(x) = x - 12. Find gh(x).
- A. x - 16
- B. 3x - 22
- C. 3x + 12
- D. 3x - 12
Verified working — step 1
In gh(x), the function written nearest to x acts first: apply h, then feed the whole result into g.The full step-by-step working and final answer, plus the video lesson for this topic, 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