**Q1: **

Does the relation shown by the arrow diagram represent a function?

- Ano
- Byes

**Q2: **

Does the relation shown by the arrow diagram represent a function?

- Ayes
- Bno

**Q3: **

Does the relation shown by the arrow diagram represent a function?

- Ayes
- Bno

**Q4: **

Does the relation shown by the arrow diagram represent a function?

- Ano
- Byes

**Q19: **

Michael believes that setting equal to the digit before the decimal point in the decimal expansion of , for each real number, defines a function from the real numbers to the set of digits . Since and are both decimal expansions of the real number 1, what does that say about ?

- A defines a function with .
- B defines a function with .
- C defines a function with or 1.
- D does not define a function.
- E defines a function with .

**Q20: **

Let and . Which of the following properties is true of the relation between and given by , where and ?

- A is not a function of because when there is no corresponding value of .
- B is not a function of because cannot always be found.
- C is not a function of because when there is no corresponding value of .
- D is a function of because each input gives a real number whose cube root gives the unique output .