Question

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

Answer 1

Domain- `1<=x<` `prop`
Range- `0<=y<` `prop`

Explanation:

`x` cannot be `<1`, because if `x<1`, there would be a negative under the radical, which cannot exist in the real number system. So `x` can be anywhere from `1` to`prop`.

Since `x` must be at least 1, the value of `y` can range from `sqrt0` `=0`, to `sqrt` of any value `>x`, which makes the limit of the range `prop`.