Functions Is It A Function Graph

• Function
• Not a Function

Which number is not an element of the domain?

• 2

• 1

• 0

• 6

Is the relation a function? Why?

• Yes, because the x-value 11 has two y-values paired 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 paired with it.

• No, because each x-value has only one y-value paired with it.

Is this graph a function or not a function? 

• Function 

• Not a Function

Is the following graph a function? Explain.

• Yes, because no x-value repeats.

• Yes, because they are individual dots.

• No, because the x repeats.

• No, because it is not a line.

Is this mapping 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

Given the function, f, shown on the graph, what is the value of f(3)?

• 0

• 2

• 6

• 1

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x - 3

• Can't be written in function notation

Find f(2)

• 5

• 4

• 3

• 0