Reflections, Reflections, Reflections

This week has been okay for me, I kind of get domain, so i'll try to explain that, in the meanwhile, can someone help me out with reflections? I know it seems so easy, but i get confused when i'm trying to work a problem on paper!


Here's the explanation, hope it helps:


There are 2 rules you should know when trying to find the domain of a function :


1: Never try to divide by zero, it just doesn't work. Only Chuck Norris can divide by zero.


2: Don't leave negative's under even powered roots. 


Example:1/(x-2)


First, set the denominator equal to 0


Second, solve for x=2


Since fractions form L-shaped graphs, use the root to figure out that the L's curve at 2, Therefore, your answer is (infinity, 2),(2,infinity)