Spherical mirror graphs

Figure 1 shows a graph where the reciprocal of the image distance is plotted against the reciprocal of the object distance. The graph is a straight line that intercepts both axes at 1/f where f is the focal length of the mirror.

Figure 2 shows a graph of the object distance plotted against the image distance for both convex and concave mirrors;. Both real and virtual objects and images are shown.