# How do you find the domain and range for #y =sqrt(x-1)#?

##### 1 Answer

Jun 21, 2015

#### Answer:

With radical functions, we know that both the expression under the root and the outcome must be non-negative.

#### Explanation:

So

There is no upper limit to **domain** is:

As for the range:

Since there is no upper limit to

graph{sqrt(x-1) [-16.12, 48.84, -16.18, 16.3]}