Systems of Equations Sum

-4x-2y=-12
4x+8y=-24

• (5,6)
• (6,-6)
• (6,-2)
• (4,-3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

x-y=11
2x+y=19

• (10,-1)
• (-1,10)
• (3,-4)
• (6,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5x - 4y  =-16
x+ 2y = -6

• (-4,-1)
• (5,-1)
• (-5,-1)
• (4,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to this system?
x = 7 - 2y
2x + y = 5

• (-1,4)
• (4,-1)
• (1,3)
• (3,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

In a pasture, there are horses and chickens. If there are a total of 28 animals and 80 legs, how many chickens and horses are there?

• 10 horses, 18 chickens
• 16 horses, 12 chickens
• 12 horses, 16 chickens
• 18 horses, 10 chickens

Tags

CCSS.8.EE.C.8C

What is the solution to this system?
y= 4x + 3
2x - 3y = 21

• (3,-9)
• (-3,-9)
• (-3,9)
• (0,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

CHALLENGE: Three equations.
x + y + z = 4
x = -2y
z = -3y
Solve the system of equations using substitution.

• x = 2
  y = -1
  z = 3
• x= -5
  y = 3
  z = 1
• x = 10
  y = -2
  z = 0
• x= 4
  y = 1
  z = -1

Tags

CCSS.HSA.REI.C.6

What is the solution for the system of equations in the accompanying diagram?

• No Solution

• Infinitely Many Solutions

• (3,1)

• (1, 3)

Tags

CCSS.8.EE.C.8B

 If a system of equations has no solution, what does the graph look like? 

• Intersecting lines
• Parallel lines
• Same line

Tags

CCSS.8.EE.C.8A

Solve this system of equations by graphing.

y = 2x

y = 3x + 1

• (-1, -2)

• (2, 1)

• (2, 4)

• (-2, -3)

Tags

CCSS.HSA.REI.C.7