Does the following picture depict a function It so is it a o

Does the following picture depict a function? It so, is it a one to one function?

Solution

The given picture depict the function.Every element of set x mapping into set y\'s exactly one element.so it is called a function.

A function is said to be one-to-one if every y value has exactly one x value mapped onto it.So the given picture is not one-to-one function.because two elements of set x mapping to one set y\'s element.