ok i have the equation:

dy/dx = (x-y)/x

i can see how this equation is exact and i can even see how it is linear, what i don't see is how it is homogeneous. doing the problems when they were separated by type, was much easier then when they are mixed together. if someone could explain how this problem is homogeneous i would appreciate it.

also the book mentioned something about:

g(tx,ty) = t^(alpha)*g(x,y) <---what does this mean? thanks in advance.