Solving Systems of Equations by Elimination and Graphing

When adding the equations in this system, what will happen?

• The x's will be eliminated.

• The y's will be eliminated.

• Both the x's and the y's will be eliminated.

• None of the variables will be eliminated.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

When adding the equations in this system, what will happen?

• The x's will be eliminated.

• The y's will be eliminated.

• Both the x's and the y's will be eliminated.

• None of the variables will be eliminated.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

When adding the equations in this system, what will happen?

• The x's will be eliminated.

• The y's will be eliminated.

• Both the x's and the y's will be eliminated.

• None of the variables will be eliminated.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

4x+8y=20

-4x+2y=-30

• (-7,1)

• (2,-5)

• (-2,-1)

• (7,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

-3x + 3y = -33

6x - 3y = 57

• (8,-3)

• (-3,8)

• (10,1)

• (8,4)

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

Solve the system by elimination.

8x + 10y = -20

−8x − 6y = −4

• (-5, -6)

• (6, 5)

• (−6, −5)

• (5, −6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

At a restaurant the cost for a breakfast taco and a small glass of milk is $2.10. The cost for 2 tacos and 3 small glasses of milk is $5.15. Write a system of equations that represents this situation.

• t - m = 2.10

  2t + 3m = 5.15

• t + m = 2.10

  2t + 3m = 5.15

• t + m = 5.15

  2t + 3m = 2.10

• t - m = 5.15

  2t - 3m = 2.10

Tags

CCSS.HSA.CED.A.3

Flagship Cinemas sells movie tickets that are $5 for matinees and $9 for regular tickets. One day, the theater sold 24 tickets and collected $168 in total ticket sales. Which system of equations can be used to calculate the number of matinee tickets sold?

• 5m + 9r = 24

  m + r = 168

• 5m + 9r = 168

  m + r = 24

• 5m + 9r = 168

  m - r = 24

• 5m - 9r = 168

  m - r = 24

Tags

CCSS.HSA.CED.A.3

Lesly graphed two lines in order to find the solution to a given system of equations.
What is the solution?

• (-3,-8)
• (-8,-3)
• (3,-8)
• (8,3)

Tags

CCSS.8.EE.C.8B