The same as in any other math class. All functions are relations but all relations are not functions. A function must have only one 'answer' in the range for each value of the domain. Relations are just pairing of numbers with no such restriction on the range.
GetA is a math function and not a string function.
They can have.
Yes, but all relations are not functions.
math
No.
No.
A formula or graph are two ways to describe a math function. How a math function is described depends on the domain of the function or the complexity of the function.
Yes. Functions are always relations, but relations are not always functions.
Function is a special case of relation. It means function is a relation but all relations are not functions. Therefore all functions are relations.
I assume you mean a "relation". All functions are relations, but not all relations are functions.
cleanses the blood