1. The problem statement, all variables and given/known data If P is proportional to q^2 and q is inversely proportional to r Show that p is proportional to r^2 2. Relevant equations p = kq^2 q = c/r where k and c are proportional constants 3. The attempt at a solution I'd say this is impossible. This is all the information given to me. This was found in an exam paper. But even if we assume k = c p is not proportional to r^2. -.- Any ideas?