Functions Review

Is this graph a function?

• Yes

• No

Answer explanation

The scatter plot is not a function. A vertical line can be drawn through (4, 1) and (4, 5).

Is this graph a function?

• Yes

• No

Answer explanation

The scatter plot is a function. No vertical lines cross more than one point.

Is this graph a function?

• Yes

• No

Answer explanation

The scatter plot is a function. No vertical lines cross more than one point.The scatter plot is not a function. A vertical line can be drawn through (3, 2), and (3, 6).

Is this graph a function?

• Yes

• No

Answer explanation

The scatter plot is a function. No vertical lines cross more than one point.

Is this graph a function?

• Yes

• No

Answer explanation

The scatter plot is a function. No vertical lines cross more than one point.

Is this graph a function?

• Yes

• No

Answer explanation

The graph is not a function. A vertical line will cross two y-values for most x-values.

Is this graph a function?

• Yes

• No

Answer explanation

The graph is a function. No vertical line will cross two y-values for any x-value.

Is this graph a function?

• Yes

• No

Answer explanation

The graph is not a function. A vertical line will cross two y-values for most x-values.

Is this graph a function?

• Yes

• No

Answer explanation

The graph is not a function. A vertical line will cross all y-values for x-values of 8.

Is this graph a function?

• Yes

• No

Answer explanation

The graph is a function. No vertical line will cross two y-values for any x-value.