Mapping or Applying a function into an object

Hi Everyone,

I'm trying to take a Graphics[Line[{...}]] like Graphics[Line[{ {0, 1}, {4, 5}, {2, 3} }]] and apply a predefined f[x_,y_] function to the coordinates inside the Graphics object in order to move the line to a new position (planning to animate this). No matter what permutation of Map or Apply at different depths I keep trying, I keep getting the error "f is not a graphics primitive". Any advice?