Solving Systems of Equations by Elimination-With Multiplication

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 using elimination.
 7x + 2y = 24
  8x + 2y = 30

• (6,-9)
• (-9,6)
• No solution
• Infinite number of solutions

Tags

CCSS.8.EE.C.8B

If two lines are parallel, how many solutions do they have?

• 1
• 2
• infinite
• none

Tags

CCSS.8.EE.C.8B

Solve using elimination. 
−4x − 4y = 0
  8x + 8y = 0 

• (−6, −4) 
• Infinite number of solutions  
• No solutions
• (6, 4) 

Tags

CCSS.8.EE.C.8B

Solve by elimination:

4x + 4y = 4  

3x + 4y =10

• (7,-6)
• (-6,7)
• (6,7)
• (7,6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by elimination.    

4x + 12y = −1

−3x − 9y = 0 

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

Tags

CCSS.8.EE.C.8B

Solve the system by elimination.  

5x + 8y = -12

3x + 5y = -7

• (1, -10)
• No solution
• (-4, 1)
• (1, 10)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations by elimination.
-x + y = -13
-8x - 4y = -8 

• (5, 8)
• (5, -8)
• (-5, -18)
• (-5, 8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by Elimination:

-2x - 8y = -2

-2x + 6y = -16

• x = -2, y = -1

• x = -1, y = -2

• x = 5, y = -1

• x = -5, y = -1

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by Elimination:

3x - 4y = -7

3x - 3y = 0

• x = 7, y = -7

• x = 7, y = -5

• x = -5, y = -7

• x = 7, y = 7

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6