Solving Simultaneous Equations

Solve the simultaneous equations

x+y=5

x-y=1

• x=2, y=3

• x=3, y=2

• x=3, y=-2

• x=-3, y=2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the simultaneous equations

a+b=11

a-b=3

• a=7, b = 4

• a=-4, b= 7

• a=4, b = 7

• a=4, b= -7

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the Simultaneous Equations: a+b= 3; a-b= -7

• a=-2, b = 5
• a=2, b = -5
• a=2, b = 5
• a=-2, b = -5

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution?

• No solution
• (0, 2)
• (0, -4)
• (3, -3)

Tags

CCSS.8.EE.C.8A

Where do these two lines intersect?

• No solution
• (-2, 3)
• (3, -2)
• (2, 3)

Tags

CCSS.8.EE.C.8B

What is the solution?

• (6, 3)
• (3, 6)
• (-6, 3)
• No solution

Tags

CCSS.8.EE.C.8A

Solve the system of equations using substitution:

-4x + 4y = 8

y = -2x - 10

• (-4, -2)

• (12, -34)

• (4, -18)

• (-2, -6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution:

y = 2x + 5

2x + 2y = 4

• (1, 7)

• (7, 1)

• (2, 9)

• (-1, 3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the system?

8x + 4y = 12

y = -2x + 3

• (0,3)

• (3,0)

• No solution(parallel lines)

• Infinitely many solutions

Tags

CCSS.8.EE.C.8B

Solve:

3x - y = 11

x + y = 5

• x = 4

  y = 1

• x = 4

  y = -1

• x = -4

  y = 1

• x = -4

  y = -1

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6