Precalculus Practice Exam 1
Spring, 2008
1.
(12 points) True or False.
____(a)
If a linear function is increasing, then its slope is positive.
____(b)
The average rate of change of a function Q
= f(t) over an interval can be symbolically
represented as
∆
t/
∆
Q.
____(c)
The graph of a circle is not the graph of a function.
____(d)
It is possible for two quantities to be related and yet neither of the quantities is a
function of the other.
____(e)
Average speed can be computed by dividing the distance traveled by the time elapsed.
____(f)
If A = f(n) is the smallest area of the head of a pin which is required for n angels to
dance on it, then f(10) = 100 tells us that 10 angels can dance on the head of a pin whose area is
100.
2. (8 points)
Suppose the function f has the graph shown below.
The domain of f is:
3.
x
0
≤
≤
(a)
Find the average rate of change of the function f between x = 1 and x = 2.
(b)
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 Spring '08
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 Calculus, PreCalculus, Derivative, Rate Of Change, Slope, 4%, 6 years, $270.00, $185.00

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