Study Guide Book Answers

Chapter 4, page 208:

1. A relation can be represented as a set of ordered pairs, a table, a graph, or a mapping.
2. Sample answer: {(1,2), (3,4), (5,6), (7,8), (9,8)}
3. The domain of a range is the range of the inverse, and the range of a relation is the domain of the inverse.
4.D={-7,5,8}, R={-2,1,3}
x y
5 -2
8 5
-7 1

5. D={-1,3,5,6}; R={-3,4,9}
x y
6 4
3 -3
-1 9
5 -3

6. D={-2,3,7}; R={0,1,5}
x y
7 1
3 0
-2 5

7. D={-4,-1,6}; R={7,8,9}
x y
-4 8
-1 9
-4 7
6 9

8.
x y
3 -2
-6 7
4 3
-6 5

9.
x y
-4 9
2 5
-2 -2
11 12