Elimination Opposite Coefficients

The coefficients of the eliminated variable must be _____.

• opposites

• the same

• distinct

• does not matter

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Look for ____ when determining which variable to eliminate. Select all that apply

• same coefficeints with opposite signs

• easy numbers to multiply to (common factors)

• different coefficients

• vertical alignment of like terms

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

10y-11x=-4

-2y+3x=4

• (2,2)

• (4,4)

• (4,8)

• (3,2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

-9x+4y=6

-3x+2y=6

• (2,6)

• (3,4)

• (5,8)

• (9,6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

-3x+12y=30

-9x+6y=30

• (-6,-4)

• (-6,8)

• (-8,-4)

• (6,4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

4x+y=-43

2x-8y=4

• (-5,-6)

• (-10,-3)

• (-11,-4)

• (-7,-8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system with linear combinations method (Elimination method). x + 4y = -4 3x + 5y = 2 Type in answer with no spaces between terms. Ex: (-2,1) If no soultion type in NS If infinitely many solutions type in IMS

Answer explanation

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

4x+ 9y = 28

-4x -y = -28

• (-7,0)

• (6,0)

• (-6,0)

• (7,0)

• (6,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6