Find an equation of the normal line (the normal line is perpendicular to the tangent line) to the graph of y= at x = 1. x+1

A duck's flight is given by the following expression: y = x^2 + x + 4. X and y are coordinates of its flight. When x = 2, the duck takes a hit and thereafter its flight follows the trajectory of a tangent line. What is the coordinate when x=4.

Y=a(x-1)^2+2 passes through the points (10,-160) A=