Solving a System by Elimination Using Addition and Subtraction

Solve by elimination:

4x - 6y = -6

-2x - 12y = -12

• (0,1)

• (1,0)

• (1,1)

• (0, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What method would you use to solve the following system of equations.

2x + 3y = 10

5x - 3y = 4

• Graphing

• Substitution

• Elimination

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination

x+y=-4

x-y=2

• (1,2)

• (-1,-3)

• (4,5)

• (3,2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What operation is used to ELIMINATE a variable?

• addition

• subtraction

• multiplication

• division

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equation by elimination.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What do you have to multiply the first equation by to have the x's be opposite and the same?

• 3

• 2

• -2

• -3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of linear equations by elimination.

-x + y = -13

-8x - 4y = -8

• (5, 8)

• (5, -8)

• (-5, -18)

• (-5, 8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination. 
 2x + 4y = 10
-4x + 2y = -30

• (-7,1)

• (2,-5)

• (-2,5)

• (7,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:

8y+7x=-75

8y+9x=-5

• (-5, -5)

• (40, -35)

• (-5, 5)

• (35, -40)

• (-35, 5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using the elimination method.

• (1,-6)

• (-6,1)

• (-1,6)

• (10,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6