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Ch 25: SAT Math: Equations and Expressions

About This Chapter

Review essential algebra functions for the math portion of your SAT. The short, engaging videos and informative quizzes will help you get ready for the exam.

SAT Math: Equations and Expressions - Chapter Summary

The largest portion of the math SAT addresses algebra functions. Prepare by taking advantage of our user-friendly video lessons that cover essential topics:

  • Linear equations
  • Absolute value
  • Systems of equations
  • Direct and inverse variations
  • Exponential equations
  • Quadratics formula and equations
  • Multiplication of binomials with FOIL and area methods
  • Polynomials
  • Complete the square

As you make your way through the short video lessons, make sure that you also complete the quick quizzes. Then you'll know if you're ready to go on to the next chapter or if there are topics you should review first.

SAT Math Objectives

At least 35% of the math test, composed of 58 questions over 80 minutes, analyzes your algebra skills. The SAT topics tested in this area include the following:

  • Exponents
  • Simplifying and substituting
  • Linear equations and inequalities
  • Algebraic word problems
  • Quadratic equations
  • Radical and rational equations
  • Absolute value
  • Inverse and direct variation
  • Equations of lines
  • Algebraic functions concepts

By completing our review in this chapter, you'll address all of the topics listed above. Complete the accompanying exercises for additional practice in solving absolute value, using FOIL and the area method in multiplying binomials and in completing the square. By the time you take the quizzes, you should be ready for some positive feedback.

You may use an approved model of calculator on test day for the calculator section. There is also a no-calculator section. You don't lose any points for incorrect answers in responses, nor for questions you choose not to answer. Your raw score then converts into a scaled score ranging from 200-800. If you earn around 500, you'll know that your score was similar to the national average for SAT math test takers.

7 Lessons in Chapter 25: SAT Math: Equations and Expressions
What is a Linear Equation?

1. 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.

How to Write a Linear Equation

2. 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.

Linear Equations: Intercepts, Standard Form and Graphing

3. 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.

What is a System of Equations?

4. 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.

How Do I Use a System of Equations?

5. How Do I Use a System of Equations?

There are a few classic algebra word problems, such as the one about two trains traveling at different speeds. In this lesson, you'll learn how to take a word problem and convert it into the system of equations that will allow you to find the answer using either substitution or elimination.

Direct and Inverse Variation Problems: Definition & Examples

6. Direct and Inverse Variation Problems: Definition & Examples

In this lesson, you'll learn how to approach questions about direct and inverse variation with a simple explanation of what the terms mean and how to apply them to problems.

How to Solve Exponential Equations

7. How to Solve Exponential Equations

If you're planning on putting some money in the bank to save up for that next thing you've got to have, it might be best to know a little about exponential equations first. Learn how to check how long it will take you to have as much money as you need here!

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