Solving Systems Using Substitution and Elimination

When you solve the system of equations, what is the solution for x?

• 4

• -1

• -4

• 1

Tags

CCSS.HSA.REI.C.9

• (4, 8)

• (5, 11)

• (3, 9)

• (2, 14)

Tags

CCSS.8.EE.C.8C

y = 11

y + 4x = 35

• (4, 11)

• (-9, 11)

• (11, 4)

• (11, -9)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

2x + y = 7

x = 3y

• (0, 5)

• (3, 1)

• (6, 14)

• (2, 1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3x + y = –14

–2x – y = 9

Which method would be best for solving this system?

• Substitution

• Elimination

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system. Record your answer as (x,y).

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system by substitution.

• (1, -4)

• (1, 4)

• (-4, -7)

• (-7, -4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = 2/3x - 2
y = -x + 3

• (0,3)

• (0,-3)

• (3,0)

• (-3,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the following systems of equations using substitution:

2y + x = -15

x = 3y

• (-3, -9)

• (-9, -3)

• (-3, 9)

• (9, -3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6