ECZ 2021 · GCE Paper 1 — Relations and Functions
The functions f and g are defined by f(x) = x − 34and g(x) = 2x + 1. Find fg(−3).
- A. −2
- B. 2
- C. −1
- D. −52
Verified working — step 1
Using fg(x) = x − 12from the previous part: fg(−3) = −3 − 12= −42= −2. (Or g(−3) = −5, then f(−5) = −5 − 34= …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.
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