Solving systems by substitution and elimination

Identify the solution to this system of equations.

• (4, -1)
• (-1, 4)
• (-4, 1)
• (-4, -1)

Tags

CCSS.8.EE.C.8B

-4x-2y=-12

4x+8y=-24

• (6,-6)

• (-6,6)

• (6,6)

• (-6,-6)

7x + 4y = -6
-7x - 6y = 30
answers in (x,y)

• (6, -12)
• (6, 12)
• (-12, 8)
• (12, -8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

-8x - 7y = 10
-8x + 5y = 34
answers in (x,y)

• No Solution
• (-3, -10)
• (3, 2)
• (-3, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

-3x+3y = 18
5x-3y = -26
answers in (x,y)

• (4,2)
• (-4,-2)
• (-4,2)
• (4,-2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations:

y=2x

x + y = 9

• (6, 3)

• (3, 6)

• (-3, -6)

• no solution

Tags

CCSS.HSA.REI.C.7

Solve this system of equation

y = 8x + 1

y = 6x + 3

• (1, 9)

• (4, 14)

• (0, 1)

• (2, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Determine how many solutions the system has.

• One Solution
• No Solutions
• Infinitely Many Solutions
• Mikey is my friend.

Tags

CCSS.8.EE.C.8B

Determine how many solutions the system has.
(Hint:  Both lines are graphed over each other)

• One Solution
• No solution
• Infinitely Many Solutions
• I am Spartacus!

Tags

CCSS.8.EE.C.8A