Answer:
- a) and c) - function,
- b) and d) - nonfunction
Step-by-step explanation:
- As per definition, a function is such a relationship that each input has exactly one output
Considering this we observe that:
- a) function
- b) not a function as input of -1 has two different outputs o and 1
- c) function
- d) not a function as input of 0 has two different outputs 0 and 0.5
