Solve Systems by Elimination

Which 2 terms will cancel each other out?

• 6y and y

• 2x and -2x

• 8 and 6

Tags

CCSS.7.EE.A.1

Why was it helpful to eliminate the x-term when combining the two equations?

• When the x-term cancels, it leaves only the y-term in the new equation.

• When the x-term cancels, we now know that x=0

• It has no effect on the solution process.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the equation.

6(2)+2x=8

• 4
• -2
• 0
• 2

Tags

CCSS.7.EE.B.4A

What is the ordered pair? PAY ATTENTION TO x & y.

• (-2,2)

• (2,-2)

Which letter will be eliminated on #1?

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the value of x?

6x=18

• 2
• 4
• 5
• 3

Tags

CCSS.6.EE.B.7

Which letter will eliminate when you add both equations together?

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

After y cancels, what do you get when you combine both equations?

• 7x=14

• 7x=6

• x=14

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which letter will you replace with 2 in the next step?

• x

• y

Tags

CCSS.6.EE.A.2C

What is the solution?

• (2,4)

• (4,2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6