Elimination Method Using Addition and Subtraction

Which is the best method for solving this system of equations?

-4x-2y=-12

4x+8y=-24

• Substitution

• Elimination

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the systems

x+y=5

x-y=3

• (8,3)

• (5,2)

• (6,-1)

• (4,1)

• No solutions

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

When using the elimination method, the terms have to be lined up vertically.

• True

• False

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for x and y:
4x + 2y = 22
4x - 2y = 18

• x = 2, y = 6

• x = 4, y = 3

• x = 5, y = 1

• x and y can be anything

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What do you get when you add the follow equations together

-4x + 5y = -25

4x - 7y = 19

• -2y = -6

• 2y = 6

• 8y = -6

• 3y = -6

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using Elimination.

-4x - 5y = 10

8x + 6y = 4

• (6, 5)

• Infinitely Many Solutions

• (-6, -5)

• (5, -6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the following linear equation? Use elimination

x+y=4

2x-3y=18

• (6,2)

• (-6,2)

• (6,-2)

• (-6,-2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which variable will be eliminated

3x+7y=23

-3x-7y=-17

• all of them

• none of them

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve using any method:

3x-7y=13

12x+14y=10

• (2, -1)

• (2, 1)

• (1, -2)

• (-1, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Given the work shown, determine the number of solutions.

• One solution

• No Solution

• Many Solutions

Tags

CCSS.8.EE.C.8B