Identifying Graphs of Functions

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

Increases at an increasing rate.

• E

• A

• F

• C

6.  Quickly increases a a CONSTANT rate.

• B

• C

• A

• F

Is the following a function?

• Yes, this is a function.

• No, it's not a function.

• Can't be determined with this information.

The following is not a function because...

• There are two values that equal 2.

• x = 10 and x = 40 has two values each.

• In the f(x) column, the 5 repeats.

• This table is actually a function.

Is the following graph a function?

• Yes it is a function.

• No, it is not a function.

• There is not enough information to answer this question.

 Every morning, Tom walks along a straight road from his home to the bus stop. Below, is a graph representing Tom’s trip to school.
- What is the distance covered through the second segment, which is between 50 seconds, and 70 seconds?

• 40 meters

• 60 meters

• 80 meters

• 20 meters