Content Standards A.CED.2 Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with.

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Content Standards A.CED.2 Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales. A.REI.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. Mathematical Practices 7 Look for and make use of structure. Common Core State Standards © Copyright National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.

You solved systems of equations by using substitution. Solve systems of equations by using elimination with addition. Solve systems of equations by using elimination with subtraction.

Elimination when you have Opposites Elimination by Multiplication to Create Opposites

Elimination Using Opposites Cornell Notes: Use elimination to solve the system of equations. –3x + 4y = 12 3x – 6y = 18

You Try: Use elimination to solve the system of equations. 3x – 5y = 1 2x + 5y = 9 A.(1, 2) B.(2, 1) C.(0, 0) D.(2, 2)

Elimination Using Multiplication to Create Opposites Cornell Notes: Use elimination to solve the system of equations. 4x + 2y = 28 4x – 3y = 18

Use elimination to solve the system of equations. 9x – 2y = 30 x – 2y = 14 A.(2, 2) B.(–6, –6) C.(–6, 2) D.(2, –6)

Write and Solve a System of Equations Cornell Notes: RENTALS A hardware store earned $ from renting ladders and power tools last week. The store charged 36 days for ladders and 85 days for power tools. This week the store charged 36 days for ladders, 70 days for power tools, and earned $829. How much does the store charge per day for ladders and for power tools?

Write Cornell Notes Summary 6.3 in Homework Packet GROUP QUIZ TOMORROW