3.2 notes part 2 - -3 2 7 2 4 y x y x No Additive Inverse...

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1 3.2 Notes (part 2) Solving Systems Algebraically Elimination Objective: -solve systems using the elimination method -identify additive inverse -identify no additive inverse Solving Using Elimination Step 1: Check to see if two terms are additive inverses of one another. If so add the two equations. = + = - 3 2 7 2 4 y x y x Elimination Step 2: Solve for the remaining variable. 5x = 10 Step 3: Substitute and solve for the other variable. = + =
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Unformatted text preview: -3 2 7 2 4 y x y x No Additive Inverse To make additive inverses you may need to multiply one or both equations by a nonzero number. -= + = + 2 6 4 1 9 4 y x y x You try! -= + = + 4 2 5 15 7 3 y x y x Systems w/out a Unique Solution 1) 2) -= +-=-3 2 3 2 y x y x -= +-=-6 3 2 18 3 2 y x y x 2 Homework p. 126 # 18-26, 33-35, 56- 58...
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This note was uploaded on 05/13/2011 for the course MTH 98 taught by Professor Johnson during the Fall '09 term at Grand Valley State University.

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3.2 notes part 2 - -3 2 7 2 4 y x y x No Additive Inverse...

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