8th Grade Unit 6 Pre-Assessment

MGSE8.EE.8: The coordinate grid shown represents a system of linear equations.

Which of the following coordinates is the solution to this system?

• (-2, 3)

• (0, -3)

• (3, -2)

• (3, 2)

Tags

CCSS.8.EE.C.8B

MGSE8.EE.8: Consider the system below: Which statement is TRUE about this system?

-8x - 2y = -13

y = 11 - 4x

• The lines intersect at exactly one point.

• The lines do not intersect because they are parallel.

• The lines overlap. They are coinciding lines.

• The graphs of the equations intersect at 2 points.

Tags

CCSS.8.EE.C.8B

MGSE8.EE.8: A particular real-life situation yielded the following system.

y = 4x + 3

y = -x - 2

Which of the following points is the solution to this system?

• (-1, -1)

• (-1, 1)

• (1, 7)

• (1, -3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

MGSE8.EE.8: At an ice cream store, one family bought four ice cream cones and three sundaes for $14. Another family bought six cones and two sundaes for $14.75.

Which system of equations represents the finding of the cost of one sundae and one ice cream cone?

• c + s = 15

  4c + 3s = 28.75

• c + s = 28.75

  10c + 5s = 15

• 4c + 3s = 14

  6c + 2s = 14.75

• 10c = 14

  5c + s = 14.75

Tags

CCSS.8.EE.C.8C

MGSE8. EE.8: Julio and Tina open bank accounts on the same day. Julio opens his with $100 and Tina opens hers with $150. Julio deposits $15 a week and Tina deposits $10 dollars a week. After how many weeks will they have the same amount of money saved?

If you were to write a system of equations for this situation, how many solutions would the system have?

• No Solution

• One Solution

• Two Solutions

• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8C

MGSE8.EE.8: Which student(s) are using substitution to solve the system?

• Students 1 & 2

• Students 3 & 4

• Only student 2

• Only student 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

MGSE8.EE.8: How many solutions does the following system of equations have?

2x + 8y = 6

-5x - 20y = - 15

• No Solution

• One Solution

• Two Solutions

• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8B

An online video streaming service offers two plans for unlimited streaming. Plan A has a one-time $25 membership fee and is $8 per month. Plan B has a $5 membership fee and is $12 per month.

Part A: Write a system of equations that represents the two plans. Let “x” represents the number of months. Let “y” represents the total cost of the plan.

Part B: Determine when Plan A and Plan B will cost the same amount by solving the system of equations.

• Part A y = 25x + 8; y = 5x + 12

  Part B 5 months

• Part A y = 8x + 25; y = 12x + 5

  Part B 5 months

• Part A y = 33x; y = 17x

  Part B 16 months

• Part A y = 8x + 25; y = 12x + 5

  Part B The plans will never cost the same amount.

Tags

CCSS.8.EE.C.8C