Introduction to Function Notation

Is this graph a function or not a function? 

• Function 

• Not a Function

Does this mapping diagram represent a function?

• No, because an input value goes to multiple output values

• Yes, because each input goes to one and only one output

Is this table a function or not a function? 

• Function

• Not a Function

The set of all x-values used to graph a function are called the ____.

• Domain

• Range

• Relation

• Function

Function or not a function

• function

• not a function

Is this mapping a function or not a function? 

• Function

• Not a Function 

f(x) is read as...

• f times x

• fx

• f of x

• f in x

In function notation f(x) = 3x+5 the x is also known as ...

• The Input

• The Output

• The Product

• The sum

In function notation the f(x) = 10.

10 is the ...

• Input

• Output

• Product

• Sum

How do you evaluate a function?

• Evaluate the function by taking the derivative of the input values.

• Evaluate the function by finding the average of the input values.

• Evaluate the function by multiplying the input values together.

• Substitute input values into the function and perform the necessary operations to obtain the output value.