Systems of Equations by Elimination

What is the answer to the following system of equations?

X + Y = 6

X - Y = 4

write your answer as two numbers in parentheses separated by comma with no spaces

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the answer to the following system of equations?

X + 3Y = 23

X - 3Y = 17

write your answer as two numbers in parentheses separated by comma with no spaces

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the answer to the following system of equations?

2X + Y = 11

X - Y = 4

write your answer as two numbers in parentheses separated by comma with no spaces

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The solution to a system of linear equations is ALWAYS...

• a fraction

• an ordered pair

• a decimal

• a negative number

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (-1,10)
• (10,-1)
• (10,1)
• (1,10)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (1,3)
• (2,3)
• (-1,3)
• (-2,3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using elimination. What is the value of "y"?
 $-x\ +\ 3y\ =\ 13$  
 $x\ +\ y\ =\ 3$  

• y = 16
  

• y = 2
  

• y = 4
  

• y = 3
  

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (3,9)
• (6,9)
• (3,-9)
• (6,-9)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The first step of the Elimination method is to arrange the variables into _________.

• rows

• columns

• substitute

• addition

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

When we add the equations together, one variable (one column) is _______.

• eliminated

• selected

• graphed

• substituted

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6