Chapter 7.pdf - CHAPTER 7 System of Linear Equations Source Elementary Intermediate Algebra Fourth Edition Prepared and Edited by Dr Mohamad Hammoudi

Chapter 7.pdf - CHAPTER 7 System of Linear Equations Source...

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CHAPTER 7 System of Linear Equations Source: Elementary & Intermediate Algebra, Fourth Edition Prepared and Edited by: Dr. Mohamad Hammoudi
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Topics of Chapter 7 8.2: Solve a system by the substitution method 8.3: Solve a system by the addition method 2
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8.1: Solving Systems of Linear Equations by Graphing. In Section 2.1, we defined a solution set as “the set of all values for the variable that makes an equation a true statement.” For the equation 2 x 3 x + 5 = x 7 The solution set is {6}. This tells us that 6 is the only value for the variable x that makes the equation a true statement. The goal in this chapter is to solve linear systems of equations using two methods: the substitution method and the addition method . 3
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8.2: Solve a System by the Substitution Method In this method, we solve one of the equations from the original system for one of the variables. That expression is then substituted into the other equation of the system to provide an equation in a single variable.
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