systems review - elimination

-4x-2y=-12
  4x+8y=-24

• (6,-6)
• (-6,6)
• (6,6)
• (-6,-6)

8x+y=-16

-3x+y=-5

• (-1,-8)

• (-8,-1)

• (-2,0)

• (0,-5)

Solve by elimination 
-2x + 6y = 16
-4x  - 3y = 2

• (2,2)
• (-2, -2) 
• (-2,2)
• (2,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination.

5x+4y=-14

3x+6y=6

• (-6, 4)

• (6, 11)

• (2/5, 4)

• (3, -4)

The sum of Mr. Might and Ms. Might's age is 55.  The difference is 3.  Which system of equations represents the situation?

• 2x + 3y = 55
  2x + 5y = 3
• x + y = 55
  x - y = 3
• x + y = 3
  x - y = 55

Solve by elimination
4x-6y= -6
-2x-12y= -12

• (0,1) 
• (1,0)
• (1,1)
• (2,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5x + 4y = 1

10x + 6y = -6

• (-3, 4)

• (-3, -4)

• (3, 4)

• (4, -3)

• (4, 3)

Solve the system of equations.

• (-6, 30)

• (-2, 10)

• (44, 39)

• No solution

• Infinite solutions

Tags

CCSS.8.EE.C.8B

-x + 7y = -15

y = 4x - 6

• (1, -2)

• (-7, -7)

• (-6, -7)

• (-6, -6)

4x - 2y = -6

y = 2x - 7

• No Solution

• (5, -3)

• (5, 3)

• (5, -7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6