Functions Practice Test

Is this graph a function or not a function? 

• Function 
• Not a Function

Which graph does NOT pass the vertical line test?

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

• Function
• Not a Function

Look at the graph. Is the relation a function?

• yes

• no

Is this table a function and how can you tell?

• Yes its a function because there are not variables for missing numbers
• No it's not a function because the y value 4 repeated
• No it isn't a function because the x value 2 is repeated
• No it's not a function because the x value 5 has y values of  10 & 12

• Function

• Not a Function

If a question asks you to find f(2), what does that mean?

• Let x = 2

• Let y = 2

$f\left(x\right)=5x-12$ What is $f\left(-4\right)$

• -32

• -3

• -12

• 3

What is the value of f(-5)?

• -2

• 2

• 4

• 0

What is f(5) for the function f?

f(x) = 2(x - 7)

• 3

• -4

• -3

• 1