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Q: How do you determine if a relation represents a function?

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determine whether each relation is a function y equals -8

Two ways to determine whether the relation is a function is use a mapping diagram or use a vertical line test.

You can use the vertical line test to determine if a relation is a function. It's pretty simple: if there is any part of the graph where there are more than one of the same x-values for different y-values (ex. (3,2), (3,5), and (3,9)), the relation is not a function

No, a function must be a relation although a relation need not be a functions.

No. A relation is not a special type of function.

Related questions

Does the graph above show a relation, a function, both a relation and a function, or neither a relation nor a function?

A relation is a function if every input has a distinct output.

determine whether each relation is a function y equals -8

Two ways to determine whether the relation is a function is use a mapping diagram or use a vertical line test.

You can use the vertical line test to determine if a relation is a function. It's pretty simple: if there is any part of the graph where there are more than one of the same x-values for different y-values (ex. (3,2), (3,5), and (3,9)), the relation is not a function

Not every relation is a function. But every function is a relation. Function is just a part of relation.

No, a function must be a relation although a relation need not be a functions.

what is the difference between function and relation?

yes.

A function is a relation whose mapping is a bijection.

A graph is represents a function if for every value x, there is at most one value of y = f(x).

Not every relation is a function. A function is type of relation in which every element of its domain maps to only one element in the range. However, every function is a relation.

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