Problems 7-10 assume that a rocket is following the path y = x , from left to right. 7. At what point should the engine be turned off in order to coast along the tangent line to a base at (5, 16)?11. Find the slopes of the lines tangent to the graph below at the points (3, 1), (3,3) and (4,2). x = 4y - y- (3. 3) ( 4, 2) (3. 1)