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ALG2 Guided Notes - Unit 3 - Systems of Equations - …

ANSWER KEY Unit Essential Questions: How does representing functions graphically help you solve a system of Equations ? How does writing equivalent Equations help you solve a system of Equations ? Williams Math Lessons Algebra 2 Systems of Equations -49- SECTION : SOLVING Systems USING GRAPHS : Solve Systems of linear Equations exactly and approximately ( with graphs), focusing on pairs of linear Equations in two variables. RATING LEARNING SCALE 4 I am able to solve Systems of Equations by graphing in real-world situations or more challenging problems that I have never previously attempted 3 I am able to solve Systems of Equations by graphing 2 I am able to solve Systems of Equations by graphing with help 1 I am able to understand the definition of a system of Equations WARM UP Graph each equation. Use one coordinate plane for all 3 graphs. y=2x 2 y= x y= 12x+4 KEY CONCEPTS AND VOCABULARY Systems of Equations - a set of two or more Equations that use the same variables.

equations in two variables. MACC.912.A-REI.C.5: Prove that, given a system with two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions. RATING LEARNING SCALE 4 I am able to

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