# Is the relation a function: {(51,126),(51,126),(105,-145),(160,140),(105,125),(133,-114)}?

##### 1 Answer

Jul 11, 2018

No it is not. See explanation.

#### Explanation:

A relation can be called a function if and only if for every argument (the first element of the pair) there is **only one** value (the second element of the pair).

Here it is not true, because there are 2 pairs with

Note:

The elements with both identical coordinates can be repeated (as