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Any mapping in which

  • an [x] value is left unmapped or,
  • one [x] value is mapped to more than one [y] value
is not a function.
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Q: Determine which relation is not a function?
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Related questions

How do you determine if a relation is a function?

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


Relation is a function y equals -8?

determine whether each relation is a function y equals -8


What are two ways to determine whether a relation is a function?

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


How do you determine if a relation represents a function?

If the function is a straight line equation that passes through the graph once, then that's a function, anything on a graph is a relation!


What test is used to determine if a relation is a function?

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


Is the relation a function?

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


How do you determine if it's a function?

To determine if a relation is a function, you can use the vertical line test. If a vertical line intersects the graph of the relation at more than one point, then it is not a function. In a function, each input value (x) can only correspond to one output value (y).


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.