Holt Algebra 1_chapter 05_quiz 1 4k3v4n

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5

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Quiz 1 For use after Lessons 5.1–5.4

Write an equation in slope-intercept form of the line that es through the given point and has the given slope m.

Answers 1.

1. (2, 3); m 5 2 2. (5, 24); m 5 21

2.

1 3. (6, 2); m 5 2} 2

3.

4 4. (23, 21); m 5 } 5

4. 5.

Write an equation in point-slope form of the line that es through the given points. 5. (2, 22), (5, 7)

6.

6. (6, 4), (2, 1)

Write an equation in standard form of the line that es through the given points.

7.

7. (0, 3), (2, 23)

8.

8. (1, 21), (4, 2)

9.

Write a rule for the nth term of the sequence. Find a100. 9. 218, 25, 8, 21, 34, ...

10.

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10. 36.1, 58.3, 80.5, 102.7, ... 11. A racquetball club charges $10 for a one-month trial hip.

After the trial month, the regular hip fee is $12 per month. Write an equation that gives the total cost of a hip C as a function of the length of hip m (in months).

11. 12.

12. Use your equation from Exercise 11 to find the total cost of

hip after 8 months.

Algebra 1 Chapter 5 Assessment Book

87

Chapter 4, continued SAT/ACT Chapter Test

10. an 5 36.1 1 (n 2 1)22.2; 2233.9

1. E 2. D 3. B 4. D 5. C 6. A 7. B 8. C 9 9. A 10. E 11. D 12. B 13. C 14. } or 1.8 5 15. $12 16. 5 years

11. C 5 12(m 2 1) 1 10 12. $94

1. Complete answers should include: a list of the three methods that can be used to graph a linear equation: make a table, use intercepts, and use the slope and y-intercept; an explanation of how to graph 2x + y = 3 using each method. 2. a. x-intercept: 80; y-intercept: 25 Large plants

b.

6. Lines a and c are parallel. 7. relatively no correlation 8. negative correlation 9. 4 10. 18

Chapter Test A

y 30 25 20 15 10

5 0

3 1 1. y 5 5x 2 7 2. y 5 }x 1 } 2 2 2 3. y 5 2} x 2 6 4. y 5 3x 2 9 5 5. Lines a and b are perpendicular.

3 1. y 5 22x 2. y 5 } x 2 1 3. y 5 3x 2 9 4 2 4. y 5 2x 1 2 5. y 5 } x 2 3 6. $30 7. $35 3 0 16 32 48 64 80 96 x Small plants

8. C 5 35m 1 30 9. $450 10.

plants that can be placed in the garden if no large plants are used. The y-intercept represents the number of large plants that can be placed in the garden if no small plants are used. d. Sample answer: 16 small and 20 large; 32 small and 15 large; 48 small and 10 large 5 5 e. 2} f. y 5 2} x 1 25 16 16

Large plants

3 2 1 23 22

1

2

3 4

5

6 x

1 2 3 x 22 23

12. not arithmetic; There is no common difference. 13. arithmetic; 244, 255 1 1 14. f (x) 5 2} x 1 } 15. f (x) 5 4x 2 15 2 2 16. 4s 1 6l 5 304 17. Sample answer: 1 seat

25

cushion and 50 license plate holders; 10 seat cushions and 44 license plate holders

20 15 10

1 18. Parallel: y 5 } x 1 5; 2

5 0

0 16 32 48 64 80 96 x Small plants

Perpendicular: y 5 22x 1 15 19.

h. The slope remained the same, but the

y-intercept increased by 5 units.

Chapter 5 Quiz 1 1. y 5 2x 2 1 2. y 5 2x 1 1

1 7 4 3. y 5 2} x 1 5 4. y 5 } x 1 } 2 5 5 5. y 1 2 5 3(x 2 2) or y 2 7 5 3(x 2 5)

Calories

Copyright © Holt McDougal. All rights reserved.

y 30

O

y

11.

y 4 3 2 1

c. The x-intercept represents the number of small

g.

ANSWERS

Performance Assessment

Quiz 2

y 700 650 600 550 500 450 400

0

0 10 20 30 40 50 x Fat (g)

20. The scatter plot shows a positive correlation.

As the grams of fat increased, the number of calories tends to increase.

3 3 6. y 2 4 5 }(x 2 6) or y 2 1 5 }(x 2 2) 4 4 7. 3x 1 y 5 3 8. x 2 y 5 2 9. an 5 218 1 (n 2 1)13; 1269

Algebra 1 Assessment Book

A11