Question 12974
I'm not sure exactly what you mean by this.  If you mean {{{y=sqrt(x)- 2}}} which is technically what you have given, it means that x must be greater than or equal to zero.  Domain is in interval notation:  [0, infinity) 


If you meant {{{y=sqrt(x-2)}}}, this means that x-2 must be greater than or equal to zero.  If you add 2 to each side of the inequality, you get x must be greater than or equal to 2.  Domain for this, in interval notation, would be [2, infinity).


R^2 at SCC