Solving Systems by Elimination

Solve by elimination:

 $4x+9y=28$  

 $-4x-y=-28$  

• (-7,0)

• (6,0)

• (-6,0)

• (7,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination:

 $3x+7y=23$  
 $-3x-7y=-17$  

• No solution

• ARN

• (1,3)

• (3,3)

Tags

CCSS.8.EE.C.8B

Solve by 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

Solve by elimination 

 $-12x-10y=0$ 
  $6x+5y=-1$  

• infinite solutions

• (0,0)

• no solution 

• (2,1)

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 
 $x+y=-5$  
 $x-y=7$  

• (1, 6)

• no solution 

• (0, -2)

• infinite solutions 

Tags

CCSS.8.EE.C.8B

Solve the system by elimination.
 $3x+2y=16$  

 $7x+y=19$  

• (-2, 5)

• (-2, -5)

• (2 ,-5)

• (2 ,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6