Linear functions: practice and worksheets
Interpret, evaluate, and compare linear functions represented by equations, tables, graphs, and contexts.
Concept overview
A linear function has a constant rate of change. In f(x) = mx + b, m is the rate of change and b is the initial value when x = 0.
Key points
- Evaluate a function by substituting the input everywhere the variable appears.
- Find slope as change in output divided by change in input.
- Compare functions by matching their rates of change and initial values.
Worked example
For f(x) = −3x + 4, f(2) = −6 + 4 = −2. The function decreases by 3 whenever x increases by 1.
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Questions by difficulty
Linear functions worksheet practice
Use the printable worksheet for independent practice, then check the answer key and worked explanations.
Frequently asked questions
How should I practice Linear functions?
Start with foundation questions, check each answer, and move up a level after several correct answers in a row.
How many practice questions are available?
IQClub currently has 346 published questions for this skill.
Can I use this for test preparation?
Yes. The practice reinforces school mathematics and the same reasoning used in high-school tests and entrance exams.