Solving Systems Using Elimination

Which variable would be easiest to eliminate?

• x

• y

• Neither

• both

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which variable is easiest to eliminate?

• x

• y

• neither

• both

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which variable is easiest to eliminate?

• x

• y

• neither

• both

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

To eliminate a variable in the system, should you add the equations or subtract the equations?

• Add

• Subtract

• Neither

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

To eliminate a variable in the system, should you add the equations or subtract the equations?

x + y = 11

2x + y = 19

• add

• subtract

• neither

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

To eliminate a variable in the system, should you add the equations or subtract the equations?

-4x - 2y = -12

4x + 8y = -24

• add

• subtract

• neither

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

To add and eliminate the x’s to solve, what value should you multiply the top equation by.

2x - 5y = 10.

4x + 15y = -10

• -2

• 2

• 3

• -3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

To add and eliminate the y’s to solve, what value should you multiply the bottom equation by.

x − 3y = 11

2x + y = 19

• 2

• -2

• -3

• 3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

To add and eliminate the x’s to solve, what value should you multiply the top equation by.

2x - 4y = -20

10x + 7y = 4

• 5

• 2

• -5

• -2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the following using elimination.

7x + y = -9

-3x - y = 5

• No solution

• (1,8)

• (-2,-3)

• (-1,-2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6