1. The problem statement, all variables and given/known data Find the equation of the line that is perpendicular to the tangent line to the curve, y=(3x+1)/(4x-2) at the point (1,2) 2. Relevant equations 3. The attempt at a solution I am absolutely confused with this problem. I tried taking a derivative of the equation. And I got y'=-10/(4x-2)2 I couldn't set it equal to 0, it will not work. What have I done wrong?