Now i know this is probably a basic question so please forgive me.

i have a problem y = tan(pi*x) + 2

iv established my points as x = -3pi/2 -pi/2 -pi/4 0 pi/4 pi/2 and 3pi/4 the problem is I don't quite grasp what would happen to my x points when i multiply them by pi an explanation would be great and thanks in advance for your help i can pretty much figure it out from there once i know what that initial pi*x is