# lesson practice a 1.7 for use with pages 42 index the table shows the apparent a p 65 70 75 65 80 85...

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• Name Date Co

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47Algebra 1

Chapter 1 Resource Book

Complete the statement.

1. The ? axis of the graph of a function is labeled with the input variable.

2. The ? axis of the graph of a function is labeled with the output variable.

Write the ordered pairs that can be formed from the table.

3. Input Output

0 2

1 4

2 6

3 8

4.Input Output

3 2

6 2

9 2

12 2

5.Input Output

10 4

9 8

8 12

7 16

Identify the ordered pairs in the graph. Then identify the domain and range.

6.

x

y

O 1 2 3

1

4 5 6

2

3

4

5

67.

x

y

O 2 4 6

2

8 10 12

4

6

8

10

12 8.

x

y

O 1 2 3

2

4 5 6

4

6

8

10

12

9.

x

y

O 1 2 3 4 5 6

2

4

6

8

10

1210.

x

y

O 122232425

2

4

24

26

6 11.

x

y

O 1 2 3 422

2

4

24

26

6

Graph the function.

12. y 5 x 1 5 13. y 5 x 2 3 14. y 5 3x

Domain: 0, 1, 2, 3 Domain: 6, 5, 4, 3 Domain: 1, 3, 5, 7

y

O x1 2 3 4

2

4

6

8

10

x

y

O 2 4 6 8

1

2

3

4

x

y

O 2 4 6

5

8

25

20

15

10

LESSON

1.7 Practice AFor use with pages 42248

LES

SO

N 1.7

LAHA111FLCRB_C01_047-060.indd 47LAHA111FLCRB_C01_047-060.indd 47 1/19/09 4:43:41 PM1/19/09 4:43:41 PM

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48Algebra 1Chapter 1 Resource Book

Match the rule for the function with its graph.

15. y 5 6x 16. y 5 6x 2 1 17. y 5 x 1 6

18. y 5 1 }

6 x 19. y 5 x 2 6 20. y 5 6x 1 1

A.

x

y

O

2

4

6

8

10

12

1 2 3 4 5

B.

x

y

O

1

2

3

4

5

6

2 4 6 8 10

C.

x

y

O

4

8

12

16

20

24

1 2 3 4 5

D.

x

y

O

1

2

3

4

5

6

5 10 15 20 25

E.

x

y

O

3

6

9

12

15

18

1 2 3 4 5

F.

x

y

O

4

8

12

16

20

24

1 2 3 4 5

21. Hourly Pay The table shows the pay d (in dollars) as a function

h

d

2 4 6

10

800

20

30

40

50

60

Pay

(do

llars

)

Hours worked

of the number of hours worked h. Graph the function.

Hours worked, h 1 2 3 5 8

Pay (dollars), d 6.75 13.50 20.25 33.75 54

22. Heat Index The table shows the apparent

A

P

65 70 75

65

80 85 90 9500

70

75

80

85

90

95

Ap

par

ent

tem

per

atu

re (

F)

Air temperature (F)

temperature P (in degrees Fahrenheit), or thetemperature as it feels to your body, as a function of the air temperature A (in degrees Fahrenheit) when there is 10% humidity. Graph the function. Then use your graph to predict the apparent temperature when the air temperature is 105F and the humidity is 10%.

Air temperature (F), A 70 75 80 85 90 95

Apparent temperature (F), P 65 70 75 80 85 90

LESSON

1.7 Practice A continuedFor use with pages 42248

LES

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N 1

.7

LAHA111FLCRB_C01_047-060.indd 48LAHA111FLCRB_C01_047-060.indd 48 1/19/09 4:43:42 PM1/19/09 4:43:42 PM

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A4Algebra 1Chapter 1 Resource Book

12. a. the number of plants left; the number of plants planted b. y 5 12 2 xc.

x 0 1 2 3 4 5

y 12 11 10 9 8 7

x 6 7 8 9 10 11 12

y 6 5 4 3 2 1 0

Range: 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0

13. y 5 9x 14. y 5 5x 1 25; \$65

Practice Level B

1. independent 2. dependent 3. function

4. function 5. not a function

6. Domain 1 2 3 4

Range 2 6 10 14

7. Domain 10 20 30 40

Range 4 5 6 7

8. Domain 6 7 8 9

Range 5 5.5 6 6.5

9. y 5 5x 10. y 5 x 2 7 11. y 5 x 2 2

12. y 5 8x; independent: number of balloon bunches; dependent: number of balloons; 80 balloons

13. y 5 10 1 3x; independent: number of hours left in shift; dependent: number of loaves baked; 22 loaves

Practice Level C

1. function 2. function 3. not a function

4. Domain 12 15 18 21

Range 0 1 2 3

5. Domain 1 3 5 7

Range 1 1.5 2 2.5

6. Domain 10 20 30 40

Range 1 4 } 3

5 }

3 2

7. y 5 2x 1 3 8. y 5 1 }

2 x 2 1 9. y 5 x 1 31.5;

42.5 10. y 5 18 1 6x; 72 novelty items

11. y 5 8 1 4x; 32 sandwich rings

Review for Mastery

1. domain: 2, 5, 7, 8; range: 5, 11, 15, 17

2. domain: 1, 3, 4, 7; range: 2, 8, 11, 20

3. Input 0 3 5 7

Output 0 12 20 28

range: 0, 12, 20, 28

4. Input 1 2 3 4

Output 1 4 7 10

range: 1, 4, 7, 10

5. y 5 x 1 11 6. y 5 1 }

2 x

Challenge Practice

1. 0, 1, 2, 3 2. 1, 2, 3, 5 3. 2 4. 5, 2

5. any value except 22, 1, 2, or 3

Lesson 1.7

Practice Level A

1. horizontal 2. vertical 3. (0, 2), (1, 4), (2, 6), (3, 8) 4. (3, 2), (6, 2), (9, 2), (12, 2) 5. (10, 4), (9, 8), (8, 12), (7, 16) 6. (1, 3), (2, 4), (3, 5), (4, 6); domain: 1, 2, 3, 4; range: 3, 4, 5, 6 7. (2, 1), (4, 3), (6, 5), (8, 7); domain: 2, 4, 6, 8;range: 1, 3, 5, 7 8. (0, 9), (1, 8), (2, 7), (3, 6); domain: 0, 1, 2, 3; range: 9, 8, 7, 6

9. (1, 5), (2, 7), (3, 9), (4, 11); domain: 1, 2, 3, 4; range: 5, 7, 9, 11 10. (23, 27), (22, 23), (21, 1), (0, 5); domain: 23, 22, 21, 0; range: 27, 23, 1, 5 11. (21, 3), (0, 0), (1, 23), (2 26); domain: 21, 0, 1, 2; range: 3, 0, 23, 26

12.

x

y

O 1 2 3

2

4

4

6

8

10 13.

x

y

O 2 4 6

1

8

2

3

4

Lesson 1.6, continuedA

NS

WE

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LAHA111FLCRB_BMv1_C01_A01-A07.in4 4 2/2/09 7:23:02 PM

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A5Algebra 1

Chapter 1 Resource Book

14.

x

y

O 2 4 6

5

8

25

20

15

10

15. C 16. F 17. A 18. D 19. B 20. E

21.

h

d

2 4 6

10

800

2030405060

Pay

(do

llars

)

Hours worked

22.

A

P

65 70 75

65

80 85 90 9500

707580859095

Ap

par

ent

tem

per

atu

re (

F)

Air temperature (F)

1008F

Practice Level B

1.

x

y

O 1 2 3

2

4 5 6 7

4

6

10

12

8

14

16 2.

x

y

2

4

6

10

12

8

14

16

O 2 4 6 8 10 12 14

3. x 0 1 2 3

y 2 5 8 11

4. x 1 2 3 4

y 3 7 11 15

5.

x

y

O 1 2 3

1

4 5 6

2

3

4

5

6 6.

x

y

O 3 6 9

1

12 15 18

2

3

4

5

6

7.

x

y

O 1 2 3

3

4 5 6

6

9

12

15

18 8.

x

y

O 1 2 3

1

4 5 6

2

3

4

5

6

9. y 5 x 1 6; domain: 0, 1, 2, 3; range: 6, 7, 8, 9

10. y 5 4x 2 1; domain: 1, 2, 3, 4; range: 3, 7, 11,15 11. y 5 2x 1 5; domain: 0, 1, 2, 3;

range: 5, 7, 9, 11 12. y 5 1 }

3 x;

domain: 3, 6, 9, 12; range: 1, 2, 3, 4 13. y 5 6x 2 4; domain: 1, 2, 3,

4; range: 2, 8, 14, 20 14. y 5 1 }

2 x 1 3;

domain: 0, 2, 4, 6; range: 3, 4, 5, 6

15.

d

H

1 2 3 4 50

0

202530354045

Hig

h t

emp

erat

ure

(F

)

Number of days since Monday

16. a.

x

y

1 2 3

40

4 5 60

0

4550556065707580

Th

s p

er in

ch

Screw size

b. The number of threads decrease as the screw size increases. c. Yes. Answers will vary.

Practice Level C

1.

x

y

O 2 4 6

2

8 10

4

6

10

8

2.

x

y

O 0.5

2

1.0

4

6

10

8

3. x 6 9 12 15

y 0 2 4 6

4. x 21 0 1 2

y 11 8 5 2

Lesson 1.7, continuedA

NS

WE

RS

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