# 7.2 notes - system 15 7 2 =-= y x x y Which one will we...

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Section 7.2 Solving systems using substitution

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Objectives Substitute expressions into a given equation Solve systems using substitution
The Substitution Method We will replace one variable with an equivalent expression It’s a lot like getting change for a 50 dollar bill

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Solve using substitution What are you finding when you solve a

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Unformatted text preview: system? 15 7 2 =-= y x x y Which one will we substitute? Does it matter? 10 6 2 4-= + = x y x y Solve the system. Then check your answer y x x y-= = + 2 3 28 8 6 How can we use substitution? 2 2 ) ( + = x x f 4 3 ) ( + = x x f Homework # ____ Page 350 #5, 7, 9, 11, 13, 14, 20, 36, 39...
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## This note was uploaded on 05/16/2011 for the course ALGEBRA 098 taught by Professor Johnson during the Spring '09 term at Grand Valley State.

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7.2 notes - system 15 7 2 =-= y x x y Which one will we...

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