# 7_2 - 7.2 Linear Systems 7.2 LINEAR SYSTEMS Learning Targets 1 Use elimination to solve a system of linear equations 2 Tell whether or not a system

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7.2 Linear Systems Algebra 2 11 7.2 LINEAR SYSTEMS Learning Targets 1. Use elimination to solve a system of linear equations. 2. Tell whether or not a system of equations has 0, 1, or infinite solutions. A third way to solve a system of linear equations is by a method called “elimination”. The goal is to line up the variables and add the equations together so that one of the variables is eliminated . Elimination works great when all the variables have coefficients other than 1 or –1. Example 1 : Solve the system of equations by elimination: 42 7 23 xy   Example 2 : Solve the system of equations by elimination: 3 7 15 52 4  Example 3 : Solve the system of equations by elimination: 23 1 34 8

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7.2 Linear Systems Algebra 2 12 Solving a system of equations does not always end up with a unique solution.
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## This note was uploaded on 04/11/2011 for the course MATH 1100 taught by Professor Staff during the Spring '08 term at North Texas.

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7_2 - 7.2 Linear Systems 7.2 LINEAR SYSTEMS Learning Targets 1 Use elimination to solve a system of linear equations 2 Tell whether or not a system

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