Question

Determine whether the following relation is a function. Explain on how you got your answer. Also, state the domain and range in set notation.

Answer 1

Answer:

  3. domain: {-5, -3, 0, 1, 2}; range: {0, 1, 2, 3}. Is a function.

  4. Is not a function.

Step-by-step explanation:

3. You don't need to list range values twice. Domain and range values are correct otherwise.

The relation is a function, because each domain value is used only once.

__

4. The relation is not a function, because the domain value 4 maps to two different range values. A function can only be single-valued: each domain value maps to exactly one range value.