Solving Equations Algebraically or with Graphing

Solve the system:
y = −3x + 5
5x − 4y = −3

• (-17/7, 86/7)
• (2, 1)
• (1, 2)
• (1, −8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:
x = 2y + 11
7x + 2y = 13

• (−4, 3)
• (19, −4)
• (4, 19)
• (3, −4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:
−4x − 2y = −12
x = −2y − 6

• (6, −6)
• (−10, 2)
• (−6, 6)
• (−18, −6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:
y = 9x + 49
y = x − 7

• (7, 0)
• (−7, 0)
• (−7, −14)
• (−7, 14)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system: 
y = −4x + 3
y = x − 12

• (3, −9)
• (−3, 15)
• (−3, −15)
• (3, 15)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:
  4x + 8y = 20
−4x + 2y = −30

• (−1, 7)
• (7, −1)
• (3, 1)
• (3, −1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:
7x + 2y = 24
8x + 2y = 30

• (−9, 6)
• (−6, 33)
• (−6, −39)
• (6, −9)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:
−6x + 5y = 1
  3x + 2y = −5

• (−4/7, −9/14)
• (−1, −1)
• (−7/3, 1)
• (1, −1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:
4x + 3y = 8
5x + 2y = 3

• (5, −4)
• (1, −1)
• (−1, 4)
• (−1, −4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:
  3x − 9y = −18
−5x + 15y = 30

• (0, 0)
• (534, 180)
• no solution
• infinitely many solutions

Tags

CCSS.8.EE.C.8B