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.
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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.
