In Exercise the population P (in thousands) of a city in three different years is given, thereby providing three known (t, P) data points. Find the average error for the linear function P(t) = at + b whose graph contains:
a. The first and third of these points.
b. The second and third of these points.
(Note that in some exercises we have “reset the clock,” while in others we use actual calendar years.)
Exercise
t (years) | 0 | 10 | 20 |
P (thousands) | 200 | 270 | 320 |
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