Undersanding Domain and Range

Author:: Jillian Folino

What is domain?

Domain is all the possible input values for a given function. If you take your pen/pencil and slide it horizontally, where does it hit the function? Make sure you start from the left and slide to the right!

Where does the domain start for this function?

Check my answer

Where does the domain STOP for this function?

Check my answer

Does it beep at the start and stop points?

Select all that apply

A
Yes
B
No

Check my answer (3)

Which of the following represents the domain of the function above?

Select all that apply

A
(-4,2)
B
[-4,2]
C
(-2,4)
D
[-2,4]

Check my answer (3)

Which of the following represents the domain of the function above?

Select all that apply

A
(0,4)
B
[0,4]
C
(-1,2)
D
[-1,2]

Check my answer (3)

Note: You can slide whole graph to the right if you need to!

Why is this function different than the last few examples?

Check my answer

Which of the following represents the domain of the function above?

Select all that apply

A
(1,)
B
[1,)
C
(2,)
D
[2,]

Check my answer (3)

Which of the following represents the domain of the function above?

Select all that apply

A
(2, -)
B
(-, 2]
C
(-, )
D
[-,]

Check my answer (3)

What is range?

Range is all the possible output values for a given function. If you take your pen/pencil and slide it vertically where does it hit the function? Make sure you start from the bottom and slide up!