Function or Not a Function Review Flashcard

Front

Back

A set of ordered pairs where each first element is unique.

Front

On a graph, how can you tell if a relation is not a function?

Back

If a vertical line intersects the graph at more than one point.

Front

Back

Front

Which of the following is a correct representation of a function? A mapping diagram where one input maps to two different outputs. A table where each input has a unique output. A graph where a horizontal line intersects at multiple points. A set of ordered pairs where the second elements are all the same.

Back

A table where each input has a unique output.

Front

The graph of a relation contains the points (1,2), (2,4), (3,6), and (4,8). Is this relation a function?

Back

Yes, because it passes the vertical line test.

Front

Back

Front

Which of the following scenarios represents a function? The temperature in a room at different times of the day. A person's height at different ages. The number of pets owned by various families.

Back

Both A and B.

Front

Back

Front

Back

The relation is not a function because it violates the definition of a function.

Front

Consider a vending machine as a relation where you select a button (input) and receive a snack (output). Which of the following makes this relation a function?
Options:
Being able to select multiple buttons at once for different snacks.
Each button can dispense different snacks at different times.
Every button is programmed to dispense a specific snack.
The machine can run out of snacks.

Back

Every button is programmed to dispense a specific snack.