Mathematica Coordinate plane in mathematica

[heartless]

How can I graph single points on the graph in Mathematica? Or draw whole coordinate plane, with *boxes*, like this one: (and then plot)

Can't find the informations in the tutorial I'm using presently,
Thanks,

 

[Hurkyl]

I found the mathematica documentation on the various Plot functions to have a lot of useful information.

I think it's possible to plot multiple things on the same graph. So, one thing you could do is to plot each of those horizontal and vertical lines with a blue color and small point radius (or maybe you want a small line thickness?). And then on the same drawing object (or whatever it's called), you then plot the thing you actually want to plot.

 

[FredGarvin]

If you go into the help browser and type in "plot" you will get the info for the plot command. There are probably 30 or so options for plots. I would have to fool around with it because I have not tried it myself. You would definitely have to plot some kind of function, but I think you could adjust the axes limits to exclude the plot.