Solving by Elimination Multiplying Both Equations

Solve the system by using elimination.

-5x + 7y = 2

-2x + 5y = 14

• (8, 6)

• (6, 8)

• No solution

• Infinitely many solutions

Tags

CCSS.8.EE.C.8B

Solve the system by using elimination.

-5x - 4y = -11

4x - 10y = 22

• (3, 1)

• (-3, 1)

• (3, -1)

• (-3, -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by using elimination.

-6x -5y = 11

-8x + 4y = 4

• (1, 1)

• (-1, 1)

• (1, -1)

• (-1, -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by using elimination.

10x - 9y = -20

-4x - 4y = 8

• (2, 0)

• (-2, 0)

• No solution

• Infinitely many solutions

Tags

CCSS.8.EE.C.8B

• A

• B

• C

• D

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (1, -12)

• (-5, -30)

• (-5, 10)

• (1, 18)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• A

• B

• C

• D

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (2,-8)
• (-8,2)
• (0,6)
• (6,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3x + 5y = 46
4x + 3y = 43 
x=_____
y=_____

• (7,5)

• (8,2)

• (-9,-2)

• (0,50)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What do you have to multiply the first equation by to have the x's be opposite and the same?

• 3

• 2

• -2

• -3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6