OpanGL

So I'm working on this OpanGL animation program for school, and I am curious about glTranslate function. Does this function is able to move a circle that I have drawn to a different part of screen?

Also, I have circle to move around screen, what is the best way to make circle move in a straight line at an angle from origin?

Thank you, [ßpoiler]/prog/[/spoiler]

>>8
http://en.wikipedia.org/wiki/Translation_(geometry)#Matrix_representation