Skip to ContentGo to accessibility pageKeyboard shortcuts menu
OpenStax Logo
Algebra 1

4.2.6 Lesson Summary

Algebra 14.2.6 Lesson Summary

Search for key terms or text.

In this lesson, you learned how to:

  • Use function notation to express functions that have specific inputs and outputs.
  • Explain what function notation is and why it exists.
  • Explain a statement written in function notation in terms of a situation.

Here are the activities that helped you reach those goals:

  • 4.2.1: Interpreting Graphs to Answer Questions
    • In this activity, you used graphs to answer questions and also interpreted points on graphs to answer questions.
  • 4.2.2: Interpreting Statements Written in Function Notation
    • In this activity, you used function notation to represent different situations. You identified the inputs for the functions as they changed.
    • 4.2.2: Self Check
    • 4.2.2: Additional Resources
  • 4.2.3: Finding a Unique Output for Each Input
    • In this activity, you identified inputs and outputs given rules. You determined if the inputs and outputs created a function.
    • 4.2.3: Self Check
    • 4.2.3: Additional Resources
  • 4.2.4: Understanding Function Notation Using Application Problems
    • In this activity, you read function notation in terms of the situation. You also wrote function notation to represent the given situation.

After these activities, you completed the following practice:

  • 4.2.5: Practice

Checking In

On a scale of 1 to 5, how confident do you feel about the learning goals of this lesson?

Citation/Attribution

This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's permission.

Want to cite, share, or modify this book? This book uses the Creative Commons Attribution-NonCommercial-ShareAlike License and you must attribute OpenStax.

Attribution information
  • If you are redistributing all or part of this book in a print format, then you must include on every physical page the following attribution:

    Access for free at https://openstax.org/books/algebra-1/pages/about-this-course

  • If you are redistributing all or part of this book in a digital format, then you must include on every digital page view the following attribution:

    Access for free at https://openstax.org/books/algebra-1/pages/about-this-course

Citation information

© May 21, 2025 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License . The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.