Posted by Jared on .
but what if the function is moved, then what is the line of symmetry? like (x,y)> (x+3, y1)? i understand where the line is visually but i don't know how to write the equation

FST (functions, stats, and trigonometry) 
drwls,
What equation are you trying to write?
(x,y)> (x+3, y1) represents a coordinate sytem shift (translation)