A student uses a thin converging lens to form real images of an object placed at various distances. The student plots the inverse of the image distance \(\dfrac{1}{d_i}\) as a function of the inverse of the object distance \(\dfrac{1}{d_o}\), obtaining the solid line shown in the graph with intercepts at \(\dfrac{1}{f_1}\). The student then replaces the lens with a second thin converging lens having focal length \(f_2 = 2f_1\). Which of the following graphs best represents the relationship for the second lens (dashed line) compared to the original lens (solid line)?