For some reason the desmos engine doesn't do mod(x,3)=0, perhaps it's graphing an infinately small point. If you allow the value of the modular function to be less than a small number, say, mod(x,3)<0.01, then you will see the points you expect.
Verbatim is defined as an exact repetition without changing the words. An example of verbatim is when you quote someone exactly without changing anything. word for word; in exactly the same words. Origin of verbatim.
From Anglo-Norman maxime and Middle French maxime, from Late Latin maxima (âaxiomâ), noun use of the feminine singular form of Latin maximus (apparently as used in the phrase propositio maxima greatest premise).