# Is (-3,-2), (-1,0), (0,1), (1,2) a function?

##### 2 Answers

Yes it is a function, i was wrong !

#### Explanation:

Jim says the correct explanation.

Two examples of functions using your points.

The particularity of your four points is their collinearity (=they are aligned).

Indeed, we can draw a *straight* line who is passing by all your points :

But this function is not unique, take a look of this :

Then {(-3,-2), (-1,0), (0,1), (1,2)} is a function, but you can't know more about other points. (Ex : x=2)

Yes, it is a function.

#### Explanation:

A function is a relation (a set of ordered pairs) with the additional property that: no two pairs have the same first element and different second elements.

The definition is often stated as: A relation in which every

So the Relation (the set)

**More examples**