1. The problem statement, all variables and given/known data http://i.minus.com/jDtSwpCGlrMhP.jpg [Broken] 2. Relevant equations Solving for dx/dy (change in x with respect to y) I get a solution that isn't one of the answer choices. 3. The attempt at a solution 3y^2 = 8x' + x'/x Coordinate: x = 1 (given) y = 2 (solved for in original equation) 3(4) = 9x' 12/9 = dx/dy 4/3 = dx/dy (change of x with respect to y).