Elimination Error Analysis System of Equations

Find the solution using the elimination method. (Write your answer as an ordered pair, i.e. (1,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Find the solution using the elimination method. (Write your answer as an ordered pair, i.e. (1,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

 4x + 8y = 20
-4x + 2y = -30

• (-7,1)

• (2,-5)

• (-2,5)

• (7,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination:
9x-4y=7

x-4y=-17

• (-1,5)

• (-7,5)

• (7,5)

• (3,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

what would the top equation become when you multiply everything by -1?

• 2x - 6y = 20

• -2x - 6y = -20

• -2x + 6y = 20

• -2x + 6y = -20

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

To use the elimination method, both equations need to be in...

• slope intercept form

• standard form

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for x.

(just the number)

Mathematical Equivalence

OFF

Tags

CCSS.HSA.REI.C.9

what would the top equation become when you multiply everything by -1?

• 2x - 6y = 20

• -2x - 6y = -20

• -2x + 6y = 20

• -2x + 6y = -20

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

what number should you multiply the top equation to eliminate variable x by adding:

• 5

• -1

• 2

• -2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

-4x - 6y = 6
4x + 6y = -4

• no solution

• (2,0)

• (-4,0)

• (0,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6