The third graphic system shares the same set of solutions. Notice that the first graph is two parallel lines that never cut. The second graph has two lines that intersect at a point. Therefore, compare a single solution. The third graph shares the whole set of solutions since, for each x, both lines take the same Y value answer Third graphic.
a cone would be formed due to the point on the graph forming a triangle, and when a triangle is spun around an axis on one of its sides it will form a cone
