Function Introduction Review

Evaluate f(-2) if f(x) = x+3

• -1
• 1
• 5
• -5

What is f(1)?

• 1
• 5
• 0
• 4

Which graph is not a function?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

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.

(1,5), (1,6), (1,7), (1,8), (1,9)

Is this relation a function?

• Function

• Not a function

Is this relation a function?

• Function

• Not a function

Is this graph a function or not a function? 

• Function 
• Not a Function 

You can identify a function from a graph by using the.....

• Horizontal Line Test
• Eye Test
• Vertical Line Test
• Diagonal Line Test

If f(x) = x - 5, what is the value of x when f(x) = 15?

• 20
• 10
• 5
• 0

if f(x) equals -x+8, what is f (12)?

• -4

• -8

• 4

• 8