Systems Addition

When you added the system, the result was 
      7x = -14
Now, solve for x.

• x = 2

• x= -2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Now we know x = -2.  Substitute into both equations to find y.
3x + 2y = -12
4x - 2y = -2

•  y = 18

• y = 3

• y = -3

• y = -5

Tags

CCSS.HSA.REI.C.9

Write the solution for the system of equations
3x + 2y = -12
4x - 2y = -2

• (-2, -3)

• (-2, 3)

• (2, -3)

• (2, 3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (4, -2)

• (-2, 4)

• (2, 4)

• (2, -4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Find the solution to this system.

4x + 8y = 20

−4x + 2y = −30

• (-1, 7)

• (-7, 1)

• (7, -1)

• (1, -7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Find the solution to this system.

4x+4y=4

3x+4y=10

• (7,-6)

• (-6,7)

• (6,7)

• (7,6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the following system using elimination.

x+4y=(-4)

x+10y=(-16)

• (6,3)

• (4,-2)

• (-3,1)

• (-3,4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system

-4x - 2y = -12

4x + 8y = -24

• (6, 0)

• ( 6 , -6 )

• ( -6 , 6 )

• ( 3 , -3 )

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (-5, -9)

• (9, 5)

• (5, 9)

• (-9, -5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (1, 4)

• (4, 1)

• (1, -4)

• (-4, 1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6