Solving System by Elimination

What would be the first step in finding the solution with elimination?

• cross out the 3y and -3y

• cross out the 4x and x

• change all the signs of the second equation

• add 1 and -11

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which variable will be eliminated?

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the following system by elimination.

• (6,-6)

• (2,6)

• (8,9)

• (-2,-6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using elimination.

4x + 8y = 20

-4x + 2y = -30

• (-1, 7)

• (7, -1)

• (2,-7)

• (-7, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using the elimination method.

-6x + 5y = 1

6x + 4y = -10

• (5, 9)

• (3, -4)

• (-1, -1)

• (5, 8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using the elimination method.

-2x - 9y = -25

-4x - 9y = -23

• (-1, 3)

• (1, 4)

• (6, -3)

• (1, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve using elimination.

4x-2y=16

5x+2y=11

• (3,-2)

• (1,4)

• no solution

• infinitely many solutions

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

What is the number of solutions to the system of equations?

• No Solution

• Infinitely Many Solutions

• One Solution

• Two Solutions

Tags

CCSS.8.EE.C.8B

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