Elimination Method System of Equations

Solve the system by elimination.
  5x + 8y = -12
3x + 5y = -7

• (1, -10)

• No solution

• (-4, 1)

• (1, 10)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

what does the top equation need to be multiplied by to create a zero pair?

2x - 6y = 20

2x + 5y = -11

• -1

• 1

• -2

• 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Homer sells tickets for admission to your school play and collects a total of $104. Admission prices are $6 for adults and $4 for children. He sold 21 tickets total. Solve the system:
x + y = 21
6x + 4y = 104

• (10, 11)

• (12, 9)

• (11, 10)

• (9, 12)

Tags

CCSS.8.EE.C.8C

2 or more linear equations with the same set of variables

• System

• System of Equations

• Linear Equations

• Quadratic Equations

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5x - y = 12

3x + y = 4

which variable should be "eliminated" first?

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

6x + 7y = -15

6x - 2y = 12

which variable should be "eliminated" first?

• x

• y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

6x + 7y = -15

6x - 2y = 12

Will you add or subtract to "eliminate" the x variable?

• add

• subtract

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The solution (x, y) to a system of equations is the point where they...? 

• Run off the graph

• Don't touch

• Intersect

• Exist

Tags

CCSS.8.EE.C.8B

Is (1,10) a solution to

y=7x+5

y=x+9

• yes

• no

Solve System of Equation by the Elimination Method

• (2,10)

• (-4,-8)

• (-2,-10)

• (4,8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6