About This Chapter
How it works:
- Identify the lessons in the McDougal Littell Pre-Algebra Linear Functions chapter with which you need help.
- Find the corresponding video lessons within this companion course chapter.
- Watch fun videos that cover the linear functions topics you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.
Students will learn:
- Function basics and graphs
- Linear equations
- Standard form of linear equations
- Transversals and parallel and perpendicular lines
- Systems of equations
- Intercepts of a line
- Graphs of inequalities
McDougal Littell Pre-Algebra is a registered trademark of Houghton Mifflin Company, which is not affiliated with Study.com.
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.
2. Graphing Basic Functions
Graphs are just like maps - when you know the language! Review how locations have x and y coordinates similar to latitude and longitude, and how to plot points in the Cartesian plane.
3. How to Find and Apply the Intercepts of a Line
How can you take an equation of a line and find out where it will cross the x- or y-axis? In this lesson, we'll define x-intercepts and y-intercepts and learn how to find them.
4. How to Find and Apply The Slope of a Line
In this lesson, we'll discover all about the slopes of lines. We'll learn about different types of slopes and how to find the slopes of lines. We'll use two methods: the slope formula and the slope-intercept form.
5. What is a Linear Equation?
Most cars won't be able to run for more than 250,000 miles, so how much longer will your car live? Linear Equations are the most basic kind of algebraic function and can help you answer questions exactly like this. Learn about what they look like, how they come up in your life and why they are powerful tools.
6. Linear Equations: Intercepts, Standard Form and Graphing
Do you know what to do if an equation doesn't look like y=mx+b?! If not, then this video is for you. Chances are the equation is in standard form, so we'll learn how to use standard form equations, how to graph them and why they can be helpful.
7. How to Write a Linear Equation
Simply knowing how to take a linear equation and graph it is only half of the battle. You should also be able to come up with the equation if you're given the right information.
8. Parallel, Perpendicular and Transverse Lines
What are the different types of lines? Where are they visible in the real world and how can you recognize them? Find out here and test your knowledge with a quiz.
9. 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!
10. What is a System of Equations?
So what happens if we want to compare more than one equation? Welcome to a 'system' of equations! Learn what one is, how to solve them and when they come up in real life.
11. Graphing Inequalities: Practice Problems
If you're already pretty familiar with what inequalities are and just looking for a place to practice your skills, this is the place. This lesson covers topics like 1-variable, 2-variable, compound, and systems of inequalities.
12. How to Graph 1- and 2-Variable Inequalities
So an inequality is just an equation with a less than or greater than symbol. But what is the difference between 1 and 2 variable inequalities? What does have a greater than or equal to symbol change? When do you use a number line instead of a coordinate plane? Get those answers here!
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Other chapters within the McDougal Littell Pre-Algebra: Online Textbook Help course
- McDougal Littell Pre-Algebra Chapter 1: Variables, Expressions, and Integers
- McDougal Littell Pre-Algebra Chapter 2: Solving Equations
- McDougal Littell Pre-Algebra Chapter 3: Multi-Step Equations and Inequalities
- McDougal Littell Pre-Algebra Chapter 4: Factors, Fractions, and Exponents
- McDougal Littell Pre-Algebra Chapter 5: Rational Numbers and Equations
- McDougal Littell Pre-Algebra Chapter 6: Ratio, Proportion, and Probability
- McDougal Littell Pre-Algebra Chapter 7: Percents
- McDougal Littell Pre-Algebra Chapter 9: Real Numbers and Right Triangles
- McDougal Littell Pre-Algebra Chapter 10: Measurement, Area, and Volume
- McDougal Littell Pre-Algebra Chapter 11: Data Analysis and Probability
- McDougal Littell Pre-Algebra Chapter 12: Polynomials and Nonlinear Functions
- McDougal Littell Pre-Algebra Chapter 13: Angle Relationships and Transformations