Question

Please give me the correct answer.Please decide if these 4 statements is a function or not a function.

Answer 1

As according to given statement:

1). Each school has one principal so as there is a relation between school and principal so it is a function.

2). Each student has a unique student ID number: so as there are so many students and they allhave different unique student ID's so there is a function.

3). Shoe manufacturers make different type of shoes : so as there is relation but we can't describe a function between them.

4). Each month of the year has a total amount of rainfall measured in inches:

So it is a function between month and the rainfall measured in inches.