# Algebra 1 - 3rd Edition

## Chapter 8: Systems of Equations

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

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

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

NEW Video lecture teaching about graphing to solve systems of equations.

NEW Worksheet with quick presentation of solving equations by graphing followed by practice problems and solutions.

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

### 8.2 Special Linear Systems of Equations

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

### 8.3 Solving Systems of Equations by Substitution

http://www.coolmath.com/algebra/Algebra1/08System2x2/03_substitution.htm

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

NEW Worksheet with quick presentation of solving equations by substitution followed by practice problems and answers.

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

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

NEW Worksheet with quick presentation of solving equations by adding or subtracting, followed by practice problems and answers.

### 8.5 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.