It's a little hard to understand what you are talking about but apparently you are asking if a thegraphof a "proportional relationship" (y= ax for direct proportion) contains the point (0, 0). The answer is yes,if"0" is in the domain but that is not always true.

I am assuming here that you mean "direct" proportion. The graph of an "inverse" proportion (y= a/x) never contains (0, 0).