Ch 10: Understanding Function Basics

About This Chapter

If you need to review the basics of functions for an exam, class project or homework assignment, then check out these convenient online math lessons and quizzes. This mobile-friendly chapter allows you to improve your function knowledge at any time that's convenient.

Understanding Function Basics - Chapter Summary

Work through this self-paced math chapter to review basic information about functions. You'll define function terminology and notation, as well as the different types of functions. Our expert math instructors will also show you how to find the domain and range of a function. By the end of the chapter, you should be able to:

  • Explain basic function terms
  • Identify functions and understand function notation
  • Recognize a function's domain and range
  • Work with linear functions
  • Differentiate between linear and non-linear functions

When you're finished working through each lesson, take the accompanying self-assessment quiz to practice solving basic function problems on your own. If you get stuck or need any clarification, you'll be able to submit questions to our instructors at any time. You can access the chapter online or print the lesson transcripts to study offline.

5 Lessons in Chapter 10: Understanding Function Basics
Test your knowledge with a 30-question chapter practice test
What is a Function: Basics and Key Terms

1. What is a Function: Basics and Key Terms

Mapping numbers sounds complex, but we do it when we buy gasoline. We pump gasoline, and the gas station charges us based on the amount of gas that we pump. Learn how this relates to functions while reviewing the basics and notations in this lesson.

Functions: Identification, Notation & Practice Problems

2. Functions: Identification, Notation & Practice Problems

A function is simply a rule that takes one number and turns it into another. But some special conditions must apply for it to be a true mathematical function. Learn about those conditions and how we write functions here!

What Is Domain and Range in a Function?

3. What Is Domain and Range in a Function?

The domain and range are the possible outputs and inputs of a function. In this lesson, learn about what might restrict the domain and how to figure out the domain and range from a graph.

What is a Linear Function? - Definition & Examples

4. What is a Linear Function? - Definition & Examples

In this lesson, you will learn the key identifying mark of linear functions. You'll also learn how to graph them with just two points and how you can use the graph to easily find your answers.

How to Recognize Linear Functions vs Non-Linear Functions

5. How to Recognize Linear Functions vs Non-Linear Functions

In this lesson, you'll learn about two different groups of functions: linear and nonlinear. We'll cover how they look on a graph, and how you can tell them apart when they're written as equations.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.