how do I find the domain of a square-root function?

Question

myininaya · Answer

if is in the numerator you want the inside to be bigger than or equal to zero
if the is in the denominator you want the inside to be bigger than zero

anonymous · Answer

What is the function specifically? There are multiple ways for different functions.

myininaya · Answer

f(x)=sqrt{x+1} domain is given by x+1>=0
g(x)=1/sqrt{x+1} domain is given by x+1>0

anonymous · Answer

$$y=\sqrt{x+6}$$

anonymous · Answer

well because the inside of the radical cannot be a negative, x goes from -6 to infinite, because I do not see any other restrictions

myininaya · Answer

you find domain by doing x+6>=0

anonymous · Answer

then I subtract 6 from both sides?

myininaya · Answer

yes
and you will get x>=-6 which is what quantabee said

anonymous · Answer

Ok Thank you!