Identifying Functions from Graphs

Is the following graph a function?

• Yes, because the x never repeats.

• Yes, because they are individual dots.

• No, because the x repeats.

• No, because it is not a line.

What is happening at D?

• Stationary

• Accelerating

• Fast steady speed; moving away from the starting position

• Slower steady speed; moving away from the starting position

For 1-6 Match the verbal description with the part of the graph it describes.
1. Stays the same.

• F

• A

• D

• C

Slowly increases at a CONSTANT rate.

• A

• B

• E

• D

Is this graph a function or not a function? (vertical line test: each line should only have 1 dot for a function)

• Function

• Not a Function

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

Is this graph a function or not a function? 

• Function

• Not a Function

Which statement about the relation is true?

• The relation is not function because is not continuous.

• The relation is a function because the x-values of the points are consecutives integers.

• The relation is a function because there is only one output for each input.

• The relation is not a function because both 0 and -3 are outputs for the input 1