System of Equations: Substitution & Elimination

Solve the system by elimination: 

−8x − 10y = 20
−8x − 6y = −4 

• Infinite number of solutions  
• (6, 5) 
• (−6, −5) 
• (5, −6) 

Solve the system by substitution:

x= 7 - 2y
2x + y = 5

• (-1,4)
• (4,-1)
• (1,3)
• (3,1)

Solve the system by elimination:  

4x + 12y = −1
−3x − 9y = 0 

• (10, 1) 
• (−10, −1) 
•  (10, −1) 
•  No solution 

Solve the system by elimination: 

−7x + 6y = 29
10x + y = 16 

• (1,6) 
• (−1,−3) 
•  (−3, −1) 
• (−1, 3) 

Solve the system by substitution:

y = x + 5
4x + y = 20

• (3,8)
• (8,3)
• (0,2)
• (2,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by substitution:

y = 2x - 2
-x + 8y = 14

• (2, 2)
• (6, 12)
• (1, 0)
• (1, -6)

Solve the system by elimination:   

−6x + 6y = 0
9x − 8y = 4 

• (4, −9)
  
• Infinite number of solutions 
• (−9, 4)
  
• (4, 4) 

Solve the system by elimination:
     
7x + 2y = 24
8x + 2y = 30

• (6,-9)
• (-9,6)
• (-6,9)
• (0,0)

Solve the system by substitution:

x= 7 - 2y
2x + y = 5

• (-1,4)
• (4,-1)
• (1,3)
• (3,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6