1. The problem statement, all variables and given/known data Proper way to graph xy = 1 for a Cylindrical Shell problems. 2. Relevant equations V = ∫^b_a 2πy f(y) dy 3. The attempt at a solution I am rotating around the x-axis, so I am integrating with respect to y, but should I choose x = 1/y, or y = 1/x to solve my problem? How are these two functions different? x = 1/y and y = 1/x different?