Advanced level Maths Differential Equation

2. The equation ofa curve is A) 4A:V+ 2f 2 k, where k is a constant. (:1) Find in terms of grand y. X (b) For the case where k = 2 , find the coordinates of each point on the curve at which the tangent is parallel to the yaxjs. (c) Show that for k 1:- 0, every line parallel to the yast mtersects the curve at two distinct points