12) Find the slope of the graph = 6 at ( - 6, -1) 13 14 15 16

12) Find the slope of the graph xy = 6 at ( - 6, -1) 13) Find equation of the tangent line for (x2 + 4)y = 8 (known as Witch of Agnesi) at point (2, 1). 14) Find the equation of tangent line for hyperbola x2 - yz = 16 at point (5, 3) 15) Find equation of tangent line for xy + sin(x) = 1 at point (#, 0). 16) The volume of a right cone of radius x and height y is given by V = =nxzy. If the cone has a volume of 85xcm3. Find - when x = 4cm and y = 16cm