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Intermediate Algebra________________________Date _______________________
Unit 2 Exam_
Prof. Hanson
Class________________________
Name___________________________________
Answer the following questions. Show all work necessary to receive partial credit.
Determine if the relation illustrated is a function. Give the domain and range of the
function or relation.
1. {(-2, 8), (-1, 5), (0, 4), (1, 5), (3, 13)}
Answer
A function is a relation in which each element of the domain is paired with exactly one
element of the range. In the set above, no member of the domain pairs with those elements in
the range thus the above function is not a relation.
Evaluate the function for the indicated value.
2. F(x) = -5x -2; find f (-2)
Answer
If f(x) = -2
F (-2) = -5(-2) – 2: brackets means multiplication and - by - = +
Therefore, f (x) = 8
3. f(x) =x2 - 5x + 7; find f (-3)
Answer
When f (x) = f (-3...