Unit 4 Review

Solve the following system:
 $y=-x+3$  
 $y=\frac{2}{3}x-2$  

• (0,3)

• (0,-3)

• (3,0)

• (-3,0)

Solve the following system:

y = 2x + 1

y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Solve the system of equations:

2x + 3y = 26

x = 4

• (4,1)

• (6,4)

• (1,4)

• (4,6)

Solve using Elimination. 
 4x + 8y =  20
-4x + 2y = -30

• (-7,1)
• (2,-5)
• (-2,5)
• (7,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination 
  2x + 9y = -7
6x - 3y = 9 

• (-1, -1) 
• (2,-1)
• (1,1)
• (1,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

 Solve using elimination.
 7x + 2y = 24
  8x + 2y = 30

• (6,-9)
• (-9,6)
• No solution
• Infinite number of solutions

Tags

CCSS.8.EE.C.8B

Identify the solution to this system of equations.

• (4, -1)
• (-1, 4)
• (-4, 1)
• (-4, -1)

Tags

CCSS.8.EE.C.8B

Determine how many solutions the system has.
(Hint:  Both lines are graphed over each other)

• One Solution
• No solution
• Infinitely Many Solutions
• I am Spartacus!

Tags

CCSS.8.EE.C.8A

Robin purchased toys at the toy store. She bought squishies for $3 each and surprise eggs for $2 each. She spent a total of $59 on a total of 22 items. Determine how many squishies and surprise eggs Robin purchased.

• 15 squishies

  7 surprise eggs

• 7 squishies

  15 surprise eggs

• 11 squishies

  11 surprise eggs

• 18 squishies

  4 surprise eggs

Tags

CCSS.8.EE.C.8C

Alexandra finds that she can give 3 haircuts and 2 hair dyes in 315 minutes. Giving 2 haircuts and 4 hair dyes takes 450 minutes.  Which system of equations represents the situation?

• 3x + 2y = 315
  2x + 4y = 450
• 3x + 2y = 450
  2x + 4y = 315
• 2x + 2y = 315
  3x + 4y = 450

Tags

CCSS.HSA.CED.A.3