Question 855305:  In the past, I have had questions asking what the restrictions are to the domain and range of a function or graph. I do not understand what it means by this. An example is (4,4) (6,16) (8,64) what are the restrictions to the domain and range? 
I do not know how to find the restrictions. Can you please help me understand this? 
 Answer by fcabanski(1391)      (Show Source): 
You can  put this solution on YOUR website! Every function has x and y coordinates.  (x,y).  The domain is the possible x-coordinates.  The range is the possible y-coordinates. 
When given a set of (x,y) ordered pairs, the domain is all the given x values.  The range is all the possible y values.
  
For this problem, the domain is {4,6,8} and the range is {4,16,64}.  
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