Substitution and Elimination

Which method would be best (quickest) for solving the system below: 2x + 2y = 11 3x - 4y = -2

• Substitution

• Elimination

• Graphing

• None of these

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using substitution:

x + y = 19

y = 3x - 1

• (14, 5)

• (11, 8)

• (5, 14)

• (8, 11)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the system?

• (0, 3)

• (1, -1)

• (-3, 1)

• (1, 3)

Tags

CCSS.8.EE.C.8B

Solve the system using elimination:

3x + y = 19

2x - y = 6

• (5, 14)

• (4, 5)

• (5, 4)

• (14, 5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve using substitution or elimination.

−4x − 2y = −12

4x + 8y = −24

• (5,-5)

• (6,-6)

• No solution

• Infinitely many solutions

Tags

CCSS.8.EE.C.8B

10. Solve the following system of equations: 5x - 4y = 3 and 2x + 3y = 8

• x = 4, y = 3

• x = 2, y = 1

• x = 3, y = 2

• x = 1, y = 5

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

If 2x+3y = 12 and 3x-2y=5 then

• x = 2, y = 3

• x = 2, y = -3

• x = 3, y = 2

• x = 3, y = -2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

29x+37y=103 and 37x+29y = 95 then

• x=1, y=2

• x=2, y=1

• x=3, y=2

• x=2, y=3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3x + y = 4
x + 2y = -2

• (2,2)

• (-2,-2)

• (2,-2)

• (-2,2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve:
x + y = 4
-5x - 6y = -18

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6