Question

How is an object moved in programs that produce 3D graphics?

Answer 1

you need to realize that computers can only generate 2-D images that appear 3-D

and how you could graph a 3-d object so it appears 2-d depends on the program you are using

Answer 2

essentially moving a 3-D object on a computer is the same as having 2 frames of a 2D image of a 3D object

if you're familiar with gifs, think of it like that

Answer 3

alright thanks

Answer 4

if youre interested in modern practices,

first people draw the object they want to animate
they make a 3-d model using a program (maya, autodesk, etc)

then make the object move

what the computer will then do, is "render"
essentially its taking pictures at fixed intervals of the 3D object that you're animating