5. Consider the graph below.
a. Is the graph a function? How do you
know? Yes
y = f(x)
b. If the input is 1, what is the output?
This is the same as writing f(1) =
-9-8-7-6-5-4-3-2
+ 1 2 3 4 5 6 7 8 9
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C. Evaluate the function for the following.
i. f(3)
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ii.
f(x) = 4
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