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HomeCXC CSEC MathematicsFunctions – notation, domain, range, composition and inverse functions
CXC · CSEC · Mathematics

Functions – notation, domain, range, composition and inverse functions
Practice Questions

20 CXC CSEC Mathematics questions on Functions – notation, domain, range, composition and inverse functions, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Functions – notation, domain, range, composition and inverse functions

Question 1 · 1 mark · Difficulty 1/3

Given the function f(x) = 3x − 5, what is the value of f(4)?

  1. 7
  2. 12
  3. 17
  4. 2
Show answer & explanation
✓ Answer: A7
Award 1 mark for correct substitution and evaluation: f(4) = 3(4) − 5 = 12 − 5 = 7. B is incorrect — this is the value of 3(4) without subtracting 5. C is incorrect — this results from adding 5 instead of subtracting. D is incorrect — this confuses the operation order.
Question 2 · 1 mark · Difficulty 1/3

A tour operator in Jamaica uses the function C(n) = 150n + 500 to calculate the cost in dollars of taking n tourists on a trip to Dunn's River Falls. What does the 500 represent in this function?

  1. The cost per tourist
  2. The fixed cost of the trip
  3. The total cost for 500 tourists
  4. The profit margin
Show answer & explanation
✓ Answer: BThe fixed cost of the trip
Award 1 mark for identifying 500 as the constant/fixed cost. A is incorrect — 150 represents the cost per tourist. C is incorrect — 500 is not multiplied by the number of tourists. D is incorrect — the function represents cost, not profit.
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CXC CSEC Mathematics: Functions – notation, domain, range, composition and inverse functions FAQ

How many CXC CSEC Mathematics questions on Functions – notation, domain, range, composition and inverse functions are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Functions – notation, domain, range, composition and inverse functions for CXC CSEC Mathematics, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CXC paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CXC CSEC students preparing for Mathematics?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Functions – notation, domain, range, composition and inverse functions practice with other Mathematics topics or even switch to a totally different CXC subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Functions – notation, domain, range, composition and inverse functions questions aligned to the official CXC CSEC Mathematics syllabus?
Every question is written against the published CXC CSEC Mathematics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CXC.
How is Functions – notation, domain, range, composition and inverse functions typically tested on CXC CSEC Mathematics papers?
Functions – notation, domain, range, composition and inverse functions appears across multiple question types on real CXC CSEC Mathematics papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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