 # Algebra 1 - 4th Edition

## Chapter 6: Systems of Equations and Inequalities

Some links are repeated for use with more than one lesson.

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### 6.1 Solving Systems of Equations by Graphing and Tables

http://www.regentsprep.org/regents/math/algebra/ae3/GrSys.htm
This page demonstrates how to solving systems of equations using graphing.

Video lecture teaching about graphing to solve systems of equations.

Worksheet with quick presentation of solving equations by graphing followed by practice problems and solutions. (Dismiss pop-up ads that might appear, and click Download Worksheet button.)

http://www.algebra.com/algebra/homework/Linear-equations/solve-by-graphing.solver
Online solver for pair of linear equations by the graphical method.

### 6.2 Special Linear Systems of Equations

http://www.purplemath.com/modules/systlin2.htm
Tutorial for using graphing to solve systems of equations, including the special cases discussed in the text.

### 6.3 Solving Systems of Equations by Substitution

http://www.coolmath.com/algebra/Algebra1/08System2x2/03_substitution.htm
This page shows how to solve systems of equations using substitution.

http://www.regentsprep.org/Regents/math/ALGEBRA/AE3/AlgSys.htm
This site explains solving systems of equations by substitution by solving an example in detail.

Worksheet with quick presentation of solving equations by substitution followed by practice problems and answers. (Dismiss pop-up ads that might appear, and click Download Worksheet button.)

### 6.4 Solving Systems of Equations by Addition or Subtraction

This page explains how to solve systems of equations using addition or subtraction.

This page gives example solutions of problems for solving systems of equations using addition or subtraction.

Worksheet with quick presentation of solving equations by adding or subtracting, followed by practice problems and answers. (Dismiss pop-up ads that might appear, and click Download Worksheet button.)

### 6.5 Solving Systems of Equations by Multiplication

http://www.algebra-online.com/solving-systems-equations-elimination-multiplication-1.htm
This site explains how to solve systems of equations by using multiplication with elimination.