IM1 - Ch1 Function, Domain, Range

A function is a relationship where ________

• it's a graph

• it's a table

• every input only has one (1) output

• the outputs are the same

How can you tell if a graph is a function or not a function?

• See if it looks like a line or not

• Draw a vertical line and if it crosses the graph more than once, it's NOT a function

Does this table represent a function?

• Yes!
• No!
• I Don't Know

Tags

CCSS.8.F.A.1

Is this graph a function? Why or why not?

• It is a function because no vertical lines hit it twice.

• It's not a function because a vertical line hits it twice.

• It's not a function because no vertical lines hit it twice.

• It is a function because a vertical line hits it twice.

Is this graph a function? Why or why not?

• It is a function because no vertical lines hit it twice.

• It's not a function because a vertical line hits it twice.

• It's not a function because no vertical lines hit it twice.

• It is a function because a vertical line hits it twice.

Is this graph a function? Why or why not?

• It is a function because no vertical lines hit it twice.

• It's not a function because a vertical line hits it twice.

• It's not a function because no vertical lines hit it twice.

• It is a function because a vertical line hits it twice.

Is this graph a function? Why or why not?

• It is a function because no vertical lines hit it twice.

• It's not a function because a vertical line hits it twice.

• It's not a function because no vertical lines hit it twice.

• It is a function because a vertical line hits it twice.

Is this table a function or not a function?

• Function because every input has one, consistent output

• Not a Function because both inputs 6 and 8 has two different outputs

• Function because input 18 can be repeated

Is this table a function or not a function?

• Function because every input has one output

• Not a Function because the numbers look random

Given  $f\left(x\right)=2x+3$ , what is the value of  $f\left(-10\right)$ ?  

• -23

• -17

• 23

• 17