Extended Algebra 1 Name:
Functions Worksheet 1
For exercises 1-6. decide whether each graph is the graph of a function. Then determine domain and range.
1. 2. 3.
-10 10
-10
10
-10 10
-10
10
-10 10
-10
10
(a) Is it a function?
(b) Domain:
(c) Range:
(a) Is it a function?
(b) Domain:
(c) Range:
(a) Is it a function?
(b) Domain:
(c) Range:
4. 5. 6.
-10 10
-10
10
-10 10
-10
10
-10 10
-10
10
(a) Is it a function?
(b) Domain:
(c) Range:
(a) Is it a function?
(b) Domain:
(c) Range:
(a) Is it a function?
(b) Domain:
(c) Range:
1 of 2
For exercises 7-12, use each table to determine whether the relation is a function. Then determine the domain and range.
7. 8. 9.
x 2 4 6 8 10
y 1 3 5 7 9
x 2 2 4 4 6
y −5 0 5 10 15
x 1 2 3 4 5
y −5 −5 5 5 15
(a) Is it a function?
(b) Domain:
(c) Range:
(a) Is it a function?
(b) Domain:
(c) Range:
(a) Is it a function?
(b) Domain:
(c) Range:
10. 11. 12.
x 0 5 10 15 20
y 3 6 9 12 15
x −9 7 0 3 −4
y −2 12 −6 7 12
x −4 9 2 −4 6
y −10 8 2 −3 14
(a) Is it a function?
(b) Domain:
(c) Range:
(a) Is it a function?
(b) Domain:
(c) Range:
(a) Is it a function?
(b) Domain:
(c) Range:
For exercises 13-18, determine whether each relation is a function. Then determine the domain and range.
13.
{(0, −7), (2, 5),
(−3, 1), (−8, 0)}
(a) Is it a function?
(b) Domain:
(c) Range:
14.
{(3, −5), (8, −6),
(3, 7), (5, 9)}
(a) Is it a function?
(b) Domain:
(c) Range:
15.
{(−4, 7), (2, −3),
(7, 7), (−5, 1)}
(a) Is it a function?
(b) Domain:
(c) Range:
16.
{(0, −4), (0, 2),
(0, 1), (0, 0)}
(a) Is it a function?
(b) Domain:
(c) Range:
17.
{(8, −3), (2, −3),
(9, −3), (−1, −3)}
(a) Is it a function?
(b) Domain:
(c) Range:
18.
{(9, −7), (4, 3),
(−2, 0), (9, −1)}
(a) Is it a function?
(b) Domain:
(c) Range:
2 of 2
