Algebra 1 EOC Mixed Function Review: Unit 5

Solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)
• (-2,-5)
• (2,-5)
• (2,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Christian had brochures printed for a new business venture. Christian originally ordered 4 boxes of black-and-white brochures and 3 boxes of color brochures, which cost a total of $134. After those ran out, Christian spent $120 on 3 boxes of black-and-white brochures and 3 boxes of color brochures. Which system represents this situation?

• x+y=134
  x+y=120
• 3x+3y=134
  4x+3y=120
• 4x+3y=134
  3x+3y=120
• 7xy=134
  6xy=120

Solve the following system using substitution.

• (10,8) and (-8, -10)
• no solution
• (-8, -6) and (6,8)
• (6, 8) and (8, 10)

Tags

CCSS.HSA.REI.C.7

Which of the following situations does not lead to a system having no solution?

• All the variables cancel out and you are left with a false statement like 4 = 7.
• All the variables cancel out and you are left with a statement that is always true such as 3=3.
• When you solve for a variable, all possible solutions are imaginary numbers.
• All systems of equations have at least one solution.

Tags

CCSS.8.EE.C.8B

x² - y = -2
-x + y = 4

• (-2, 2), (1, 5)
• (2, -1)
• (2, 6), (-1, 3)
• (0, 4), (3, 7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for x. 
z = xy

• x = z/y
• x = y/z
• x = yz
• y = xz

Find the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2

• The student found an incorrect common denominator
• The student did not multiply all terms by the common denominator
• The student did not use opposite operations appropriately
• The student did not correctly eliminate the variable from one side of the equation

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

Solve for y:
-5y +7p = 35r - 40v+ 7p

• -7r + 8v
• -7r -8v
• 7r + 8v
• 40r + 45v

Solve for s. 
r = 2s - 8

• s =  r + 2  8
  
• s = r + 4
• s = r + 8 2
  
• s = 2r + 16

Is the table linear or nonlinear?

• Linear
• Nonlinear

Tags

CCSS.8.F.A.3