1-8
Exercises
KEYWORD: MA7 1-8
S
s
’
e
T
s
H
s
WRIG Cl a
(0-15) Intro to Functions
KEYWORD: MA7 Parent
Name _______________________________
(0-15)
GUIDED PRACTICE
1. Vocabulary Explain why the order in an ordered pair is important.
EE EXAMPLE
1
2. J (4, 5)
p. 54
EE EXAMPLE
2
p. 54
EE EXAMPLE
3
p. 55
EE EXAMPLE 4
p. 55
3. K (-3, 2)
4. L (6, 0)
Name the quadrant in which each point lies.
6. A
7. B
8. C
9. D
10. E
11. F
12. Multi-Step The number of counselors at a summer camp
must be equal to __14 the number of campers. Write a rule for
the number of counselors that must be at the camp. Write
ordered pairs for the number of counselors when there are
76, 100, 120, and 168 campers.
5. M (1, -7)
{
Þ
Ó
{
Ó
ä
Ý
Ó
{
Ó
{
Generate ordered pairs for each function for x = -2, -1, 0, 1, and 2. Graph the
ordered pairs and describe the pattern.
1 x2
16. y = _
13. y = x + 2
14. y = -x
15. y = -2 x
2
PRACTICE AND PROBLEM SOLVING
ependent Practice
For
See
xercises Example
17–20
21–26
27
28–31
Graph each point.
1
2
3
4
17. D (2, 8)
18. E (-2, -7)
19. F (0, -5)
20. G (4, -4)
Name the quadrant in which each point lies.
xtra Practice
ls Practice p. S5
plication Practice p. S28
ath
History
9_4R.indd 57
Graph each point.
{
21. X
22. Y
23. Z
24. R
25. S
26. T
27. Multi-Step Jeremy’s wages include a $500 base salary
1
plus __
of his sales. Write a rule for the total amount of
10
Jeremy’s paycheck. Write ordered pairs for the amount of
Jeremy’s paycheck when his sales are $500, $3000, $5000,
and $7500.
-
Þ
/
Ó
<
{
Ó
Ý
ä
Ó
Ó
{
9
,
{ 8
Generate ordered pairs for each function for x = -2, -1, 0, 1, and 2. Graph the
ordered pairs and describe the pattern.
28. y = 6 - 2x
29. y = - (x 2)
30. y = 3 x
31. y = x 2 + 3
Geometry Graph each point and connect them in the order they are listed.
37. This problem will prepare you for the Multi-Step Test Prep on page 60.
Connect the last point to the first. Describe the figure drawn.
a. A room decorator wants to purchase fabric. Each yard of fabric costs $2.90. Write
32. (-1,
1), (4,
-4)of
, (the
-1, fabric.
-4) Let c equal
33. (the
-6,total
3), (cost
2, -2and
-3) the number
), (4,cost
), (-7,
a rule
for1the
f equal
fabric.
4),yards
, (5,
-1), (3, -1), (2, 2)
35. (-6, 5), (4, 5), (4, 7), (-6, 7)
34. (4, of
(6, 2)of
b.
Which
variable
is
the
input
and
which
is the
36. Multi-Step The salary at Beth’s companyvariable
is $32,000
foroutput?
someone with no
c.
Make a table
showing the
cost ofper
1, 2,
3, 4,ofand
5 yards of
fabric.
experience
and increases
by $2700
year
experience.
Write
a rule for the salary
at Beth’s
company.
Write
ordered
for thepurchase
salaries for
employees
with 0, 2, 5, and
d.
How many
whole
yards
can thepairs
decorator
if she
has $21.00?
7 years of experience.
Write an equation for each rule. Use the given values for x to generate ordered pairs.
1- 8 Introduction to Functions
Graph the ordered pairs and describe the pattern.
57
38. y is equal to 3 more than the absolute value of x; x = -2, -1, 0, 1, and 2.
39. y is equal to the sum of one half of x and -3; x = -4, -2, 0, 2, and 4.
40. y is equal to the sum of x squared and 1; x = -5, -3, -1, 1, 3, and 5.
12/13/05 4:35:56 PM
41. Business An events planner is preparing for a 5K race. She will buy enough water
Worksheetbottles
adapted
2007 Holt,
Rinehart
and
Winston
Algebra
1 Book
1
__
for 50from
volunteers,
plus 1
times the
number
of runners
who
preregister for
2
the race.
a. Write an equation for the number of water bottles the planner should buy.
b. Generate ordered pairs for the number of water bottles the event planner will buy
(0-15) Intro to Functions
1. The x value tells you how far
to move left or right. The y
value tells how far to move
up or down.
7. none
9. none
11. Q I
13. line
15. V shape
21.
23.
25.
27.
none
none
Q II
y = 500 + 0.10x ; (500, 500),
(3000, 800), (5000, 1000), (7500, 1250)
29. U shape
31. U shape
39. y = 1/2x + (-3)