Functions vs. Non Functions

Which graph does NOT pass the vertical line test? A vertical line should only touch one point at a time, if it is 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.

Define this graph. Does it pass the vertical line test?

• Function

• Not a Function

• Quadratic

• Square Root

Does the graph represent a function? Does it pass the vertical line test?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

• No, because there are not enough dots to tell

• Yes because the dots are all  red

The relation is a ​ (a)   because ​ (b)   .

• function

• no x-values repeat

• non-function

• x-values repeat

• no y-values repeat

• y-values repeat

The two ordered pairs that make this mapping NOT a function is ​ (a)   and ​ (b)   .

• (50, 10)

• (50, 20)

• (25, 20)

• (75, 30)

• (100, 30)

Tags

8.5.G

The picture ​ (a)   a function because every ​x ​ (b)   point to exactly one y.

• shows

• does not show

• does

• does not

• B

• A

• C

Identify if the table is a function or Non-Function by clicking on the word.

A: ​ (a)  

B: ​ (b)  

• Not a function

• Function