What Are Functions Quiz (5 Questions)

1. What is a function?

2. What does f(x) represent?

3. Can one input have two outputs in a function?

4. Find f(4) if f(x) = x − 1.

5. True or False: All relations are functions.

Answer Key

1. A rule that gives exactly one output for each input

2. The output when x is the input

3. No

4. 3

5. False