Question

11a - Entr Crd Function Not Funct - D & R.

Answer 1

To find:

Determine whether the relation is a function and find domain and range.

Solution:

A relation can be identified as a function if each element in domain has only one image in the range of the function.

The first function is shown by a graph. Here, each x-value has a different y-value. So, the given relation is a function.

The domain of the first function is

`(-\infty,\infty)`

The range of the first function is

`(-\infty,\infty)`

In the second function, -2 has two images that are (0, 3). So, it is not a function.

The domain is (-4, -2, 1, 2) and the range is (-1, 0, 2, 3).