This task introduces a decreasing arithmetic sequence to further solidify the idea that
arithmetic sequences have a constant difference between consecutive terms. Again, connections
should be made among all representations: table, graph, recursive and explicit formulas. The
emphasis should be on comparing increasing and decreasing arithmetic sequences through the
various representations.

In this interactive lesson, students compare tables and graphs of linear and exponential functions and the patterns associated with these functions. Students ultimately should come away with the idea that linear functions have a common difference and is a straight line, while exponential functions have a common multiplier and are curved lines.