Systems Substitution and Elimination Method

Solve the system:
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

Solve using Elimination Method:

4x+ 9y = 28

-4x -y = -28

• (-7,0)

• (6,0)

• (-6,0)

• (7,0)

• (6,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

solve using elimination

• (3,-2)

• (2,4)

• (3,4)

• (2,3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve using Substitution

• (3,8)
• (8,3)
• (0,2)
• (2,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Because the first equation is solved for y, we will use substitution.

Which of the following represents the correct equation when you substitute y into the equation?

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

•  Infinitely many solutions

•  No Solutions

•  6

• (3,6)  

•   (6,3)

•  Infinitely many solutions

•  No Solutions

Tags

CCSS.HSA.REI.C.9