Solve Systems by Equations by Substitution

Solve this system of equations
2x+y=9
y=5x+2

• (1,7)
• (2,5)
• (-1,-3)
• (5,-1)

Tags

CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

y = -2x + 18
y = 8

• (5, 8)
• (-5, 8)
• (2, 8)
• (-2, 8)

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

Does the system have one, none or infinite solutions?
8x + 4y = 12
y = -2x + 3

• (0,3)
• (3,0)
• No solution(parallel lines)
• Infinitely many solutions

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

Solve this system of equations
y=8x-5
y=2x+19

• (1,3)
• (2.4, 23.8)
• (2.5,15)
• (4,27)

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

Solve the system by substitution. 
y = 5
-6x+3y = 3

• (4,1)
• (2, 1)
• (1, 5)
• (2, 5)