Function Function

Is this mapping a function or not a function? 

• Function
• Not a Function 

Is the relation a function? 
{(4,5), (4,-7), (4,2), (4,0), (4,9)}

• Yes
• No

Is this table a function or not a function? 

• Function
• Not a Function

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.

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

• 0
• -3
• 3
• -1

Evaluate f(-2) if f(x) = x²+ 3.

• -1
• 1
• 7
• -7

Is this a function or not?

• Function

• Not a Function

Which graph does NOT pass the vertical line test?

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

Is this a function?

• Yes

• No

• I'm Confused

• May I phone a friend?

Given f(x) = 3(6 -x), what is the value of f(-8)

• -42

• 6

• -6

• 42