## anonymous 5 years ago Determine the domain and range of y= $\pm \sqrt{4-x^{2}}$ and y= -(x/4-2x) I know the domain are continuous everywhere, but I forgot how to determine the range.

1. anonymous

Are you sure it is continuous everywhere? The square root sign and a denominator seems to be saying otherwise.

2. anonymous

It is continous everywhere EXCEPT at + or - 2

3. anonymous

yea, I made a mistake I was thinking of something else. Can youhelp me determine the range?

4. anonymous

The range would positive infinity to minus infinity

5. anonymous

You can cheat and punch in your calculator and you will see that you have horizontal asymptotes.

6. anonymous

I'm sorry vertical.