Day 1 Final Review: Solving!

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x = -3

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CCSS.7.EE.B.4A

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(3,0)

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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x = 2, -1

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Solve by elimination: 2x + 9y = -7, 6x - 3y = 9

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(1,-1)

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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Definition: Absolute Value

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The distance of a number from zero on the number line, always non-negative.

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Definition: System of Equations

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A set of two or more equations with the same variables.

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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Definition: Substitution Method

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A method for solving systems of equations by solving one equation for one variable and substituting that expression into the other equation.

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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Definition: Elimination Method

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A method for solving systems of equations by adding or subtracting equations to eliminate one variable.

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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Definition: Linear Equation

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CCSS.8.F.B.4

CCSS.HSF.LE.A.2