Functions and Relations

Is this graph a function or not a function? 

• Function
• Not a Function

Is this mapping a function or not a function? 

• Function

• Not a Function

If g(x) = 2x + 5, what is the value of g(4)?

• 13

• 29

• 22

• 9

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.

All of the x values or inputs are called what?

• Domain
• Range
• Relation
• Function

Given f(x) = -4x - 10 and f(x) = 10. Find x

• x = -5
• x = 5
• x = -50
• x = 30

For the function f(x) = -3x + 3 find f(0).

• 0
• -3
• 3
• -1

.

• Function
• Not a Function

A set of ordered pairs is called what?

• Coordinates
• Relation
• Function
• Vertical Line Test