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

##### 1 Answer

Domain =

Range =

#### Explanation:

This is a simple 2nd degree equation with no denominator or anything, so you will always be able to choose ANY number for x, and get a "y" answer. So, the domain (all possible x-values) is equal to all real numbers. The common symbol for this is

However, the highest degree term in this equation is an *isn't* just a regular

This means that whatever the y-intercept is is the lowest point of the parabola. Luckily, that point is simply the

So, the range of this equation is from