8.EE.8 Systems of Equations

−4x − 2y = −12
  4x + 8y = −24

• (6, -6)
• (-6, 6)
• (-10, 2)
• (2, -10)

Tags

CCSS.HSA.REI.C.6

  4x + 8y = 20
−4x + 2y = −30

• (-1, 7)
• (-7, 1)
• (7, -1)
• (1, -7)

x − y = 11
2x + y = 19

• (-1, 10)
• (30, 19)
• (19, 30)
• (10, -1)
  

Tags

CCSS.HSA.REI.C.6

5x + y = 9
10x − 7y = −18

• (4, -11)
• (1, 4)
• (-1, 14)
• (-4, 29)

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

5x + 4y = −30
3x − 9y = −18

• (-6, 0)
• (-6, -15)
• (0, -6)
• (2, -10)

Without graphing, decide whether the system of equations has one solution, no solution, or infinitely many solutions.
 y = 5x + 3
y = -5x + 3

• One solution
• Infinitely many solutions
• No solution

Tags

CCSS.HSA.REI.C.6

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat.  Write an equation for C, the total cost, to rent the boat for h hours.

• h = 2C + 15
• C = 15h + 2
• h = 15C + 2
• C = 2h + 15

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.SSE.A.1

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.2

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage.  If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill (C)?

• C = 15 + 0.20x
• C =15 (0.20x)
• C = 15 + x + 0.20
• C = 0.20 + 15x

If a system of linear equations has infinitely many solutions, what does this mean about the two lines? 

• Intersecting lines
• Same line
• Parallel lines

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.10

How many solutions will this system have?

• One
• Two
• No Solution
• Infinitely Many Solutions

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11