Question 61 only thx

59-62 IIll Show that the given families of curves are orthogonal trajectories of each other. Sketch both families of curves on the same axes. 59. x2 + v2 = 12 ax + by = 0 60. x2 + y2 = ax, x2 + y2 = by 61. y = cx2, x2 + 2y2 = k 62. y = ax', x2 + 3y2 = b