Checkpoint 1

In Activity 1 of Section 1.2, you found that the data points in Table C1 were fit reasonably well by the equation `y=-81.24 t+164,600`, whose graph is shown with the data points in Figure C1.

Per Capita Cigarette Consumption

Table C1	Figure C1	Figure C2
Year Consumption 1975 4,123 1980 3,851 1985 3,461 1990 2,827 1995 2,515 2000 2,092

1. What is the slope of this linear function? (Note that the scales on the graph are not equal.)
2. What is the slope of the inverse function (shown in Figure C2)?
3. How are these two slopes related?