Systems Addition

Which variable will you eliminate in this system?

x − y = 11

2x + y = 19

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which operation will you use to eliminate the y in this system?

x − y = 11

2x + y = 19

• addition

• subtraction

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which variable will you eliminate in this system?

x+4y=(-4)

x+10y=(-16)

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which variable will you eliminate in this system?

4x + 8y = 20

−4x + 2y = −30

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (5, 2)

• (11, 1)

• (1, 11)

• no solution

Tags

CCSS.8.EE.C.8B

What is the value of y when solving this system?
-2x + 8y = 13
-2x + 4y = 17

• -2

• 2

• -1

• 1

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of Equation (x,y)

x + 4y = –3

x + 7y = –12

• (-3,9)

• (9,-3)

• (3,9)

• (9,3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5x - 2y = 6
x -  2y  = -2

• (2,2)

• (2,1)

• (1,2)

• (-2,-2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for the missing variable. Use either equation.

x = 1

-8x + 6y = -2

-3x -6y = -9

• y = 1

• y = -1

• y = 0

• y = 2

x-y=11
2x+y=19

• (10,-1)

• (-1,10)

• (3,-4)

• (6,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6