1. The problem statement, all variables and given/known data At the given point, find the slope of the curve, the line that is tangent to the curve, or the line that is normal to the curve, as requested. x^6y^6=64, normal at (2,1) 2. Relevant equations 3. The attempt at a solution 64/y^6 or 6x6y=0, that's as far as I am getting, totally lost.