Elimination Method Review

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

what do you need to multiply the top equation by to make a zero pair:

5x - 2y = 11

-10x + 3y = -4

• 5

• -1

• 2

• -2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Finish the problem and choose the proper solution.

• (0,-5)

• (5,-5)

• (2,-5)

• (12,-5)

Tags

CCSS.HSA.REI.C.9

Finish the problem and choose the proper solution.

• (4.5,0)

• (6,0)

• (3,0)

• (-1,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (-7, -4)

• (2, 1)

• (1, 2)

• (7, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (-3, -4)

• (3, 4)

• (-1, 0)

• (1, 0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (0, 1)

• (20, 5)

• (-20, -5)

• (0, -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (-8, 7)

• (1, -1)

• (7, -8)

• (-1, 1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The cost of 3 large candles and 5 small candles is $6.40. The cost of 4 large candles and 6 small candles is $7.50. Which pair of equations can be used to determine x (the cost of a large candle) and y (the cost of a small candle)?

• 3x + 5y = 6.4
  4x + 6y = 7.5

• x + y = 6.4
  4x + 6y = 7.5

• 3x + 5y = 6.4
  x + y = 7.5

• 5x + 3y = 6.4
  6x + 4y = 7.5

Tags

CCSS.8.EE.C.8C

When Katie was visiting her grandpa's farm, she saw the farm only raised hens and pigs. Katie counted 32 heads and 100 feet in the barnyard. Which pair of equations can be used to determine x (the number of hens) and y (the number of pigs)?

• x + y = 32

  x + y = 100

• x + 2y = 32

  x + 4y = 100

• x + y = 32

  2x + 4y = 100

• 2x + 4y = 32

  x + y = 100

Tags

CCSS.8.EE.C.8C