This tool can be used to graphically investigate the effects of parameters

*a*,

*b*, and

*c* in the following affine recurrence relation:

*A*(*n*) = *b* × *A*(*n* - 1) + *c*, *A*(0) = *a*

One possible use of this tool is to investigate the balance in a savings account that earns simple interest. If the account begins with $1000, earns 6% interest annually, and $50 is deposited each month, set *a* = 1000, *b* = 1.06, and *c* = 50. The graph will show the balance after *n* years.

The affine recurrence plotter can also be used to investigate the population of a stocked trout pond, as described in the Trout Pond unit.