Test Review!

How Many Solutions?

y = 1/3x

y = 1/3x + 8

• One Solution

• No Solutions

• Infinite Solutions

Tags

CCSS.8.EE.C.8B

How Many Solutions?

y = 4x + 6

y = x + 4

• One Solution

• No Solutions

• Infinite Solutions

Tags

CCSS.8.EE.C.8B

How Many Solutions

y = x + 5

y - 5 = x

• One Solution

• No Solutions

• Infinite Solutions

Tags

CCSS.8.EE.C.8B

How Many Solutions?

y = 3x + 7

y = 3x - 7

• One Solution

• No Solutions

• Infinite Solutions

Tags

CCSS.8.EE.C.8B

Which equation would give the system INFINITE SOLUTIONS?

y = 5x + 3

• y - 3 = 5x

• y + 3 = 5x

• y = 5x + 5

Tags

CCSS.8.EE.C.8B

Which equation would give the system NO SOLUTIONS?

y = 3x + 8

• y = 3x + 8

• y = 8x + 3

• y = 3x + 3

Tags

CCSS.8.EE.C.8B

What is the solution to this system of equations?

y = 6x + 1

x = 4

• (4, 25)

• (25, 4)

• (4, 24)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

When using substitution, how do you know a system has INFINITE solutions?

• You are left with something that is never true (like 3=4)

• You are left with something that is always true (like 4=4)

• You are left with something that is sometimes true (like y=4)

Tags

CCSS.8.EE.C.8B

When solving this system of equations:

y = 4x - 17

x = 2y + 6

You can substitute "2y + 6" in for....

• "y" in the first equation

• "x" in the first equation

• "x" in the second equation

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

When you set up the this system using substitution:

y = x - 9

y = -3x + 11

It will look like.....

• x - 9 = -3x + 11

• y = -3x + 11 - 9

• y = -3(x - 9) + 11

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6