Plug In Number Substitution

• (-3, -8)

• (-8, 3)

• (2, 3)

• (-8, -6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (-8, -5)

• No Solution

• Infinite number of solutions

• (-8, 5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• Infinite number of solutions

• (7, 5)

• (-1, 5)

• No Solution

Tags

CCSS.8.EE.C.8B

Solve this system using substitution.

• (1, -4)

• (1, 4)

• (-4, -7)

• (-7, -4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• Graphing

• Substitution

• Elimination

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Use the system of equations below to answer the question. After substituting the first equation into the second one and working it out, I got x = 1. What should I do next?

• Fill in 1 for x in y = 6x

• Fill in 1 for y in y = 6x

• Fill in 1 for y in 2x + 5y = 32

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by substitution.
 
5x + 4y= −14
y =  −7x  −  15 

• (-2, -1)

• (1, -2)

• (-2, 1)

• (-1, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

This was our original system and 2x-3y=-11 and 2x+y=9 We solved the second equation for y to get the system 2x-3y=-11, y=9-2x We plug the second equation into the first and solve to get x=2. Now, plug x=2 into any equation to solve for y. y=_____

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution:
x = -1
y = 3x + 2

• (1, 1)

• (2, -1)

• (-1, -1)

• (-1, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6