Question

Plz help me! Find the domain and range of each function using interval notation and set builder notation.

Please explain how you got it as i have no idea how to this, thanks. ^-^

Answer 1

Domain:
`x\ge-4` or
`[-4,\infty)`

Range:
`y\ge0` or
`[0,\infty)`.

Explanation:

The domain of a function refers to all x-values for which the function is defined.

We can see that the graph of the function is defined for all
`x\ge-4`

There the domain is
`x\ge-4`.

We write this in interval notation as
`[-4,\infty)`.

The range refers to the y-values for which the graph is defined.

We can see that the graph of the function is defined for
`y\ge0`.

We write this in interval notation as:
`[0,\infty)`