ECZ 2024 · GCE Paper 1 — Relations and Functions
The functions f and g are defined by f(x) = 3x - 4 and g(x) = x + 13. Find gf(-3).
- A. 4
- B. -4
- C. -2
- D. -10
Verified working — step 1
Build the composite rule first, then substitute. In gf(x) the function written nearest to x acts first: apply f, 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.
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