Solving Systems of Equations by Elimination

Solve this system using elimination:
4x + 8y = 20
−4x + 2y = −30 

• (10, −1) 
• (7, −1) 
• −1, −1) 
• (6, −6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system using elimination:
−7x + y = −19
−2x + 3y = −19

• (2, −5)
• (−6, 0) 
• (8, −1) 
• (2, 0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system using elimination:
7x + 2y = 24
8x + 2y = 30 

• (1, 4) 
• (5, 6) 
• (9, 5) 
• (6, −9) 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system using elimination:
−4x − 2y = 14
−10x + 7y = −25

• (−6, 4)
• (−2, −4)
• Infinite number of solutions 
• (−1, −5) 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system using elimination:
3x − 2y = 2
5x − 5y = 10

• (−2, −4) 
• No solution
• (2, 0)
• (−6, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system using elimination:
−14 = −20y − 7x
10y + 4 = 2x

• (2, 0) 
• (−1, −5)
• (0, −1)
• (−1, −8) 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system using elimination:
3x + 5y = 1
−6x − 10y = 14

• (5,1)
• (3,7)
• No solution
• (3,3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system using elimination:
−6x + 6y = 6
−6x + 3y = −12

• (10, −1)
• (5, 6)
• (6, −9) 
• (2, −5) 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system using elimination:
−7x − 8y = 9
−4x + 9y = −22

• Infinite solutions
• (−2, −4)
• (1, −2) 
• (−6, 4) 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system using elimination:
5x + y = 9
10x − 7y = −18

• (1, 4) 
• One solution
• (−2, −4) 
• No solution

Tags

CCSS.8.EE.C.8B