**5.2 - 2015 Q10**

10) A curve with equation y = f(x) passes through the point (4, 9).

Given that

Given that

A) find f(x), giving each term in its simplest form. (5)

Point P lies on the curve.

The normal to the curve at P is parallel to the line 2y + x = 0

B) Find the x coordinate of P. (5)

Point P lies on the curve.

The normal to the curve at P is parallel to the line 2y + x = 0

B) Find the x coordinate of P. (5)