1-1 Practice

NAME
DATE
1-1
PERIOD
Practice
Functions
1. {-3, -2, -1, 0, 1, …}
2. -6.5 < x ≤ 3
3. all multiples of 2
4. x < 0 or x > 8
Lesson 1-1
Write each set of numbers in set-builder and interval notation, if possible.
Determine whether each relation represents y as a function of x.
5. The input value x is a car’s license plate number, and the output value y is
the car’s make and model.
6.
8
y
y
7.
4
−4 0
4
8x
x
0
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
−8
8. -x + y = 3x
9. x = 5(y - 1)2
Find each function value.
10. h(x) = x2 - 8x + 1
11. f(a) = -3 √
a2 + 9
a. h(-1)
a. f(4)
b. h(2x)
b. f(3a)
c. h(x + 8)
c. f(a + 1)
State the domain of each function.
12. g(x) = √-3x
-2
2t - 6
13. h(t) = −
2
t + 6t + 9
⎧ 3x2 + 16 if x < -2
14. Find f(-4) and f(11) for the piecewise function f(x) =
⎨
⎩
Chapter 1
7
√
x - 2 if -2 < x ≤ 11.
-75 if x > 11
Glencoe Precalculus