Elimination Intro

Solve the system by elimination. Show all work.

3x + y = 19

2x - y = 6

• (5, 14)

• (4, 5)

• (5, 4)

• (14, 5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by elimination. What will you use as a multiplier and on which equation? Show all work.

x + 6y = 20

-x - 3y = -11

• (5, 2)

• (2,3)

• (1, 11)

• no solution

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination:

-9x-4y=-20

5x+4y=4

• (-4,4)

• (4,4)

• (4,-4)

• (-4,-4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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

2x + 2y = -2

3x - 2y = 12

• you cannot solve this using elimination

• cross out the 2x and 3x

• Add the like terms. The y terms will zero out.

• change to slope intercept form and graph

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system. You could use elimination OR substitution. Show work.

4x + 5y = 9

x = 5y + 1

• ( 1 , 5 )

• ( 0.2 , 1 )

• No Solution

• ( 2 , 1/5 )

Tags

CCSS.8.EE.C.8B

what is the variable that willl be "eliminated"?

5x - 4y = 11

5x + 4y = -14

• x variable

• y variables

• both variables

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

what is the resulting combined equation to the following system:

5x - 4y = 11

5x + 4y = -14

• 5x = -3

• 10y = -3

• 10x = -3

• 10x = -25

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

what is the resulting combined equation for the system below?

9x + y = 12

-9x + y = 6

• -18x = 18

• y = 18

• 2y= 18

• 18x + 2y = 18

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the System using elimination?

2x - 6y = 20

-2x + 6y = -11

• (0,5)

• (1, 3)

• no solution

• Infinite solution

Tags

CCSS.8.EE.C.8B

2x - 5y = 11

-2x + 5y = -11

Solve the system using elimination?

• (5,0)

• (0,5)

• No Solution

• Infinite Solution

Tags

CCSS.8.EE.C.8B