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A relation is also a function if each member of the domain (or x-coordinate) is paired with only one member of the range (or y-coordinate). If the relation is a set of ordered pairs that consists of real numbers a graph can be created to visualize the relation. If a vertical line can be drawn and only crosses or intersects the graph at one point then the relation is also a function.

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Q: When is a relation also a function?
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Related questions

Is the relation a function?

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


Can you have a function that is not a relation?

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


Which of these data sets represents a function?

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


Is a function always a relation and a relation always a function?

yes.


When does a relation be a function?

A function is a relation whose mapping is a bijection.


Is all relation a function?

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.


A relation is a special type of function?

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


How do you determine if a relation is a function?

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


A relation in which each element of the domain is paired with exactly one element of the range?

A relation where each element of the domain is paired with only one element of the range is a one to one function. A one to one function may also be an onto function if all elements of the range are paired.


How does graphing the order pairs of a relation can help decide if the relation is a function?

If a relation can be called a function, it means that the relation maps every element to one and only one other element. If you have some ordered pairs and see that, for example, 1 maps to 4 (1,4) and 1 also maps to 7 (1,7) , you don't have a function.


What is the difference between function and a relation?

Good question. A relation is simply that; any x-value to create any y-value. A function, however, cannot be defined for multiple values of x. In other words, for a relation to be a function, it must have singular values for all x within its domain.


How do you know if a relation is a function?

relation and function are number that combine with number and neqative number to .