ECZ 2020 · O-Level Paper 1 — Relations and Functions
The functions f and g are defined by f(x) = 3x - 2 and g(x) = 4x + 1. Find gf(x).
- A. 12x - 7
- B. 12x + 1
- C. 12x - 8
- D. 7x - 1
Verified working — step 1
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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