Chapter 1 | Functions and Graphs
29
1.1 EXERCISES For the following exercises, (a) determine the domain and the range of each relation, and (b) state whether the relation is a function. 1. x y x y
4.
x y
x y
1
1
5
1
2
1
6
1
−3 9
1
1
3
1
7
1
−2 4
2
4
4
1
−1 1
3
9
0
0
5.
x y
x y
2.
3
3
15 1
y
x
x y
5
2
21 2
−3 −2 1
1
8
1
33 3
−2 −8 2
8
10 0
−1 −1 3
−2
0
0
6.
y
x
x y
3.
−7 11 1
−2
x y
x y
−2 5
3
4
1
−3 1
1
−2 1
6
11
2
−2 2
2
0
−1
3
−1 3
3
0
0
For the following exercises, find the values for each function, if they exist, then simplify. a. f (0) b. f (1) c. f (3) d. f (− x ) e. f ( a ) f. f ( a + h ) 7. f ( x ) =5 x −2
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