A cable of a suspension bridge

Question

A cable of a suspension bridge hangs in the form of a parabola when the load is uniformly distributed horizontally. The distance between two towers is 150 meters, the point on the cable on the towers are 22 meters above the roadway. Find the vertical distance to the cable from a point in the roadway 15 meters from the foot of the tower

Answer 1

There is insufficient information given, i.e. the coordinates of the vertex, (h,k), when h=0, k is unknown

h=a(x-h)² +k