Solving pairs of linear equations in two variables

The equations of two lines are:

2x-y=4 and y+2x= 8.

What is the value of x in the solution for this system?

• x=8

• x=3

• x=11

• x=5

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve: y = 7x + 9

2y + 2x = -14

• (5, 0)

• (9, 18)

• (-2, -5)

• (1, 16)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which ordered pair (x,y) satisfies the system of equations shown below?
2x - y = 6
x + 2y = -2 

• (-6, 2)
• (-2, 2) 
• (2, -2) 
• (4, 2) 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve:
x = -3y - 17
2x + 3y = -7

(a)  

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using matrices.

• A

• B

• C

• D

Tags

CCSS.HSA.REI.C.9

Tags

CCSS.HSA.REI.C.9

Solve the system using matrices.

• A

• B

• C

• D

Tags

CCSS.HSA.REI.C.9

• x = 6 , y = 2

• x = 2 , y = 6

• x = -6 , y = 0

• x = 0 , y = 0

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using inverse matrices or Cramer's rule.

-5x + 5y = -10

-7x + 4y = 13

• (-7, -5)

• (-7, -9)

• (7, -9)

• (-7, 5)

Tags

CCSS.HSA.REI.C.9

Solve:
y = 7x + 9
2y + 2x = -14

• (5, 0)
• (9, 18)
• (-2, -5)
• (1, 16)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6