Question

How do you find the domain and range of `y= sqrt(x- 2)`?

Answer 1

See explanation.

Explanation:

For `R`
The Domain is [2 , ∞ )
The range is [0 , ∞ )

In a situation like this, if you are dealing with only real numbers then the radicand must be greater or equal to 0, otherwise you will generate imaginary roots.