Systems of Equations--Elimination Method

In order to solve a system using Elimination method, what first must happen

• Both equations are in Slope Intercept Form

• Both equations are in Standard Form

• Both equations are in Point Slope Form

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CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

4x+8y=20

-4x+2y=-30

• (-7,1)

• (2,-5)

• (-2,5)

• (7,-1)

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CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

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CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

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CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

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CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

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CCSS.HSA.REI.C.6

• Vertically Add the two equations together

• Multiply all terms in the second equation by -1

• Multiply -4y by -1 in one of the equations

• Multiply all terms in the second equation by -2 and all terms in the first equation by -1

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CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

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CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

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CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

3x  - 3y = 33
6x - 3y = 57

• (8,-3)
• (-3,8)
• (10,1)
• (10,-1)

Tags

CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6