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Functions
Practice Questions

6 US Common Core Common Core US Math questions on Functions, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Functions.

Try 2 sample questions on Functions

Question 1 · 1 mark · Difficulty 1/3

What is a function?

  1. Any equation
  2. A relation where each input has exactly one output
  3. A graph that is always a straight line
  4. Any set of numbers
Show answer & explanation
✓ Answer: BA relation where each input has exactly one output
A function assigns exactly one output (y-value) to each input (x-value). You can test this with the vertical line test on a graph.
Question 2 · 1 mark · Difficulty 1/3

If f(x) = 3x - 2, what is f(5)?

  1. 17
  2. 13
  3. 15
  4. 10
Show answer & explanation
✓ Answer: B13
f(5) = 3(5) - 2 = 15 - 2 = 13.
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20 questions · 25 min · free

US Common Core Common Core US Math: Functions FAQ

How many US Common Core Common Core US Math questions on Functions are there on Kramizo?
Kramizo currently has 6 exam-board-aligned practice questions on Functions for US Common Core Common Core US Math, 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 US Common Core 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 US Common Core Common Core students preparing for US Math?
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 practice with other US Math topics or even switch to a totally different US Common Core 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 questions aligned to the official US Common Core Common Core US Math syllabus?
Every question is written against the published US Common Core Common Core US Math specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real US Common Core 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 US Common Core.
How is Functions typically tested on US Common Core Common Core US Math papers?
Functions appears across multiple question types on real US Common Core Common Core US Math 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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