Treat the given nonlinear functions as linear functions in order to sketch their graphs. At times, this can be useful in showing certain values of a function. For example, y = 2 + 3x² can be shown as a straight line by graphing y as a function of x² . A table of values for this graph is shown along with the corresponding graph in Fig. 21.29.

The force F (in lb) applied to a lever to balance a certain weight on the opposite side of the fulcrum is given by F = 40/d , where d is the distance (in ft) of the force from the fulcrum. Sketch F as a function of 1/d.

X 0 x 0 y 2 1 2 3 4 5 14 4 9 16 25 5 14 29 50 77