Solving Systems of Equations with ELIMINATION

  4x + 8y = 20
−4x + 2y = −30

• (-1, 7)
• (-7, 1)
• (7, -1)
• (1, -7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve  the system of equations.  
   x + 5y = -27
-2x - 5y = 24

• (3, 6)
• (-3, -6)
• (-3, -4)
• (3, -6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

solve the system of equation using elimination

x - 2y = -19

5x + 2y = 1

• (3, -8)

• (-3, 11)

• (1, 0)

• (-3,8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

x − y = 11
2x + y = 19

• (-1, 10)
• (30, 19)
• (19, 30)
• (10, -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination:

-x+2y=17

2x+2y=-10

• No solution

• (-9,4)

• (-9,-4)

• (9,-4)

What can be done to one of the equations below in order to be able to eliminate a variable?

4x + 3y = 22

2x -y = -14

• Multiply the top equation by 4

• Multiply the top equation by 3

• Multiply the bottom equation by 4

• Multiply the bottom equation by 3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What can be done to one of the equations below in order to be able to eliminate a variable?

6x + 4y = 14

-9x - 8y = -25

• Multiply the top equation by 6

• Multiply the top equation by 2

• Multiply the bottom equation by 6

• Multiply the bottom equation by 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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

Solve by elimination 
2x+9y= -7 
6x-3y= 9 

• (-1, -1) 
• (2,-1)
• (1,1)
• (1,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination:

6x - 16y = -8

2x + 8y = -16

• (4, 1)

• (-4, 1)

• (4, -1)

• (-4, -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6