CCSS.Math.Content.8.EE.C.8

What is the solution?

• A
• B
• C
• D

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CCSS.Math.Content.8.EE.C.8

Caitlin won a bag full of money! She has 49 bills in all. She counts $1,430. There are $20 dollar bills and $50 dollar bills. How many of each bill does Caitlin have?
WRITE a system where T= # of $20 and F = # of $50.

• T + F = 1430
  20T + 50F = 49
• T+ F = 49
  10T + 5F = 1430 
• T + F = 49
  20T + 50F  = 1430
• T + F = 49
  T + F = 1430

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CCSS.Math.Content.8.EE.C.8

Marty graphs a system of equations, but only one line shows on the graph. What could this mean?

• The system has a unique solution.
• The system has two solutions.
• The system has infinitely many solutions.
• The system has no solution.

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CCSS.Math.Content.8.EE.C.8

x + 4y = -8
5x - 4y = -16

• (4,1)
• (1,4)
• (-4,-1)
• (-1,-4)

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CCSS.Math.Content.8.EE.C.8

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

• (−6, −4) 
• Infinite number of solutions  
• (−6, 10) 
• (6, 4) 

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CCSS.Math.Content.8.EE.C.8

Solve using elimination.
-4x - 6y = 6
4x + 6y = -4

• no solution
• (2,0)
• (-4,0)
• (0,0)

Tags

CCSS.Math.Content.8.EE.C.8

Solve the system by elimination.  

−7x + 6y = 29
10x + y = 16 

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

Tags

CCSS.Math.Content.8.EE.C.8

What is the solution?

• (1, -1)
• (-1, 1)
• (0, -2)
• (0, 1)

Tags

CCSS.Math.Content.8.EE.C.8

Given the equation y = 7x + 11, write another equation that will result in “No Solution” when both equations are graphed.

• y = -7x
• y = 7
• y = 7x + 2

Tags

CCSS.Math.Content.8.EE.C.8

Which of these is NOT one of the methods I showed you for solving systems of linear equations?

• Elimination
• Substitution
• Graphing
• Frustration

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CCSS.Math.Content.8.EE.C.8