Solving Systems of Equations

5x + y = 9
10x − 7y = −18

• (4, -11)
• (1, 4)
• (-1, 14)
• (-4, 29)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by elimination.  

−6x + 6y = 0
9x − 8y = 4 

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

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

8x + 14y = 4
-6x - 7y = -10

• (4, -2)
• (-2, 4)
• (0, 3)
• (4, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

-x - 7y = 14
-4x - 14y = 28

• (-2, 0)
• (0, -2)
• (-2, -2)
• (0, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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

• 1
• 2
• infinite
• none

Tags

CCSS.8.EE.C.8B

Will the solution (-3, -7) make the following system of equations a true statement? 
y = 4x + 5
y = x – 4

• YES
• NO

Solve by elimination
4x-6y= -6
-2x-12y= -12

• (0,1) 
• (1,0)
• (1,1)
• (2,1)

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

What is the solution to the system?

• (0, 3)
• (1, -1)
• (-3, 1)
• (1, 3)

Tags

CCSS.8.EE.C.8B

Solve by elimination
-12x-4y= -8 
  -6x-2y= -4

• no solution 
• (0,0)
• infinite solutions 
• (4,0)

Tags

CCSS.8.EE.C.8B