Ch 6: Big Ideas Math 8th Grade Chapter 6: Functions

About This Chapter

The Functions chapter of this Big Ideas Math Common Core 8th Grade Textbook Companion Course helps students learn the essential lessons associated with functions. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Functions textbook chapter.

How It Works:

  • Identify lessons in the Big Ideas Math textbook's Functions chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the function topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, re-watch the videos until you've mastered the material or submit a question for one of our instructors.

Students Will Learn:

  • Key terms related to functions
  • Mapping diagrams
  • Plotting points to graph functions
  • Function notation
  • Linear and nonlinear functions
  • Positive and negative functions
  • Increasing and decreasing functions
  • Parts of a graph
  • Using tables

Big Ideas Math is a registered trademark of Larson Texts, Inc., which is not affiliated with Study.com.

7 Lessons in Chapter 6: Big Ideas Math 8th Grade Chapter 6: Functions
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.

How to Use and Draw Mapping Diagrams

2. How to Use and Draw Mapping Diagrams

When you're working with functions, mapping diagrams are a great way to see and track the ways your inputs are related to your outputs. In this lesson, we will learn how to use and draw a mapping diagram.

Graph Functions by Plotting Points

3. Graph Functions by Plotting Points

Let's say you have a function. What does it look like? How do you graph it? In this lesson, we'll learn how to graph functions by determining and plotting points.

Functions: Identification, Notation & Practice Problems

4. 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!

Identify Where a Function is Linear, Increasing or Decreasing, Positive or Negative

5. Identify Where a Function is Linear, Increasing or Decreasing, Positive or Negative

Functions do all kinds of fun things. In this lesson, learn how to identify traits of functions such as linear or nonlinear, increasing or decreasing and positive or negative.

What Are the Different Parts of a Graph?

6. What Are the Different Parts of a Graph?

Being able to read a graph isn't just vital for an algebra class. Graphs and charts are used everywhere! We'll take a crash course on the basic x/y plane used in algebra and the fundamental vocab you need.

Using Tables and Graphs in the Real World

7. Using Tables and Graphs in the Real World

We use tables and graphs in algebra as ways to visually show an equation or function. But do we really use these in the real world? Is it that important to learn about tables and graphs? Find out in this video lesson.

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

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