Lim h-->0 for (3+h) - 9 / h

I need help on this equation:
Lim h->0 for (3+h) - 9 all over h ?

Lim h-->0 of [(3+h)-9]/h = lim h-->0 (h-6)/h which is not defined as the numerator goes to zero and anything divided by zero is undefined.

Hope that helps!