Function or Not?

Is the graph a function?

• Yes

• No

Answer explanation

This graph passes the vertical line test at all points.

Is the graph a function?

• Yes

• No

Answer explanation

This graph does NOT pass the vertical line test at all points where x>-2.

Does the table represent a function?

• Yes

• No

Answer explanation

For each x, there is exactly one y.

Does the table represent a function?

• Yes

• No

Answer explanation

The x-value -1.2 corresponds to both 2.87 and 2.3.

Does the set represent a function?

• Yes

• No

Answer explanation

The x-coordinate 3 corresponds to both -8 and 2.

Does the set represent a function?

• Yes

• No

Answer explanation

Each x-coordinate corresponds to exactly one y-coordinate.

Does the mapping diagram represent a function?

• Yes

• No

Answer explanation

The x-value -2 corresponds to both 1 and 3.

Does the mapping diagram represent a function?

• Yes

• No

Answer explanation

Each possibly x-value (domain) corresponds to exactly one y-value (range).

Does the table represent a function?

• Yes

• No

Answer explanation

Each input has exactly one output.

Does the set represent a function?

• Yes

• No

Answer explanation

Each x-coordinate corresponds to exactly one y-coordinate.