Introduction to Functions

Is it a function?

• It IS a function.

• It IS 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

A relation where every input in matches with exactly one output is called what?

• Relation

• Linear

• Exponential

• Function

.

• Function

• Not a Function

Is this mapping a function or not a function? 

• Function

• Not a Function 

Which relation diagram represents a function?

• W

• X

• Y

• Z

Which of the following relations describes a function?

• A

• D

• C

• B

If my function rule is y=x + 3, what is the OUTPUT if the input is 4?

• 4

• 3

• 7

• 10

Which of these tables represents a function?

• W

• Y

• Z

• X

Which relation diagram represents a function?

• Z

• Y

• X

• W