Solving Systems by Elimination Method Basics

What is the best method to use?

−4x − 2y = −12

4x + 8y = −24

• Graphing

• Substitution

• Elimination

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the best method to use?

4x + 8y = 20

−4x + 2y = −30

• Graphing

• Substitution

• Elimination

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which variable is easiest to eliminate?

4x + 8y = 20

−4x + 2y = −30

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which variable is easiest to eliminate?

7x + 2y = 24

8x + 2y = 30

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3x + 5y = 46
4x + 3y = 43 
x=_____
y=_____

• (7,5)

• (8,2)

• (-9,-2)

• (0,50)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination
-6x + 5y = 1
6x + 4y = -10

• (1,-1)

• (0,-1)

• (1,1)

• (-1,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve using Elimination Method:

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

Solve the System using Elimination.
7x - y = -10
-7x + 5y = -6

• (-2, -4)

• (-2, -1)

• (-4, -1)

• (6, -8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by elimination

• (8,-3)

• (3,8)

• (16,3)

• (8,3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve using Elimination Method:

x - y = 11

2x + y = 19

• (10,-1)

• (-1,10)

• (3,-4)

• (6,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6