Question

What is the domain and range of `y=x^2-3`?

Answer 1

Domain ( x value) is any real value
Range (y value) is `y>= ( -3)`;

Explanation:

Domain ( x value) is any real value
Range (y value) is `y>=( -3)`; As square of any number is positive , so y can not be less than `-3` [ans]