A1 hw 11 26 12 6 13

The following Homework Packet is Due on Friday, 12-­‐6-­‐13. You will have a homework quiz On 5 of the problems in this packet selected at random.

1

The sales tax rate at a clothing store is 8.75%. Sales tax on an item is a function of its price.

Which of the following is the dependent quantity in this function?

STAAR Algebra I

A B

1

The sales tax rate on the item Released Test Questions

The item’s price 1.

The sales tax rate a clothing store is 8.75%. Sales tax on an item is a function of its price.

C The amount of at sales tax on the item Which of the following is the dependent quantity in this function?

D The item’s size A

The sales tax rate on the item

B

The item’s price

C

The amount of sales tax on the item

D The item’s size

2.

2

Which of the following relations is a function?

I. II. III. IV.

2

2011 Release

{(0, {(0, {(0, {(0,

0), 0), 0), 0),

(0, (1, (1, (1,

1), 1), 2), 2),

(0, (2, (2, (1,

2)} 4)} 2)} 3)}

(0, (1, (1, (1,

1), 1), 2), 2),

(0, (2, (2, (1,

2)} 4)} 2)} 3)}

Which of the following relations is a function?

A I, II, and III only

B

I and II only

C

II and III only

D III and IV only

A

I, II, and III only

B

I and II only

C

II and III only

I. II. III. IV.

{(0, {(0, {(0, {(0,

0), 0), 0), 0),

D III and IV only

Page 2

STAAR Algebra I

3

2011 Release

Released Test Questions

3.

Southern Phone Company is promoting a new cell phone service plan: a customer can make up to 500 minutes of calls each month for $39.99. If the number of minutes used in a month exceeds STAAR Algebra I 2011 Release Released Test Questions 500, then the function 3

44

c І 0.40(m − 500) + 39.99

Southern Phone Company is promoting a new cell phone service plan: a customer can make up to 500 minutes of calls each month for $39.99. If the number of minutes used in a month exceeds 500, then the function describes the monthly charge, c, in dollars in terms of m, the total number of minutes

Which of the following statements best describes this function?

used.

c І 0.40(m − 500) + 39.99

A If thethe total number ofc,minutes is of more than then every used. minute beyond 500 costs describes monthly charge, in dollars used in terms m, the total500, number of minutes 40 cents.

Which of the following statements best describes this function?

BA If Every minute used costs used 40 cents, ofevery the total of minutes used. the total number of minutes is more regardless than 500, then minutenumber beyond 500 costs C

40 cents.

The first 500 minutes used costs 40 cents each, after which there is an additional charge of $39.99.

B

Every minute used costs 40 cents, regardless of the total number of minutes used.

C

The first 500 minutes used costs 40 cents each, after which there is an additional charge of

D $39.99.

If the total number of minutes used is more than 500, then every minute used costs 40 cents.

D If the total number of minutes used is more than 500, then every minute used costs 40 cents.

4.

What isisthe domain of the graphed graphed below?

What the domain offunction the function below? y

y

10 9

10

8

9

7 6

8

5

7

4

6

3

5

2

4

1 −10 −9 −8 −7 −6 −5 −4 −3 −2 −1 −1

1

2

−2 −3

3

4

5

36

−7 −8

−2 −3

−9

−4

−10

−5 −6

A

0<x≤5

B

2<x≤5

C

0<x≤4

−7 −8 −9 −10

A 0 <<x x<≤ D 0 2 5 B

2<x≤5

C

0<x≤4

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9 10

x

1

−4

−10 −9 −8 −7 −6 −5 −4 −3 −2 −1 −5 −1 −6

8

7

2

1

2

3

4

5

6

7

8

9 10

x

6

Which of the following is not a correct description of the graph of the function y І −2x − 7?

6

A The graph of the function contains the point (−2, −3), and when the value of x increases Which ofunit, the following a correct description by 1 the valueisofnot y decreases by 2 units. of the graph of the function y І −2x − 7?

5.

B (−1,−3), −5),and (2, when −11),the andvalue (4, −15).

A The The graph graph of of the the function function contains contains the the points point (−2, of x increases by 1 unit, the value of y decreases by 2 units.

C The graph of the function is a line that passes through the point (0, −7) with a slope −2.

B of The graph of the function contains the points (−1, −5), (2, −11), and (4, −15).

D the points −7), (1, C The The graph graph of of the the function function contains is a line that passes(0, through the−9), pointand (0, (3, −7)−1). with a slope of −2.

D The graph of the function contains the points (0, −7), (1, −9), and (3, −1).

6.

7

If (2k, k) and (3k, 4k) are two points on the graph of a line and k is not equal to 0, what is the slope of the line?

7

If (2k, A 3 k) and (3k, 4k) are two points on the graph of a line and k is not equal to 0, what is the slope of the line?

B A 3k 3 C B

1 3k 3

1 D C Not here 3

STAAR Algebra I

8

D Not here

Released Test Questions

2011 Release

7.

The amount an appliance repairman charges for each job is represented by the function 4 he spent on the job and t represents the t І 50h + 35, where h represents the numberPage of hours total amount he charges in dollars for the job. The repairman plans to change the amount he charges for each job. The amount he plans to charge is represented by the function t І 50h + 45.

Page 4 he charges for each job?

What will be the effect of this change on the amount A

The total amount he charges for each job will increase by $10.

B

The total amount he charges for each job will decrease by $10.

C

The amount he charges per hour will increase by $10.

D The amount he charges per hour will decrease by $10.

8.

9

The sum of the perimeters of two different squares is 32 centimeters, and the difference between their perimeters is 8 centimeters. If x represents the side length of the larger square and y represents the side length of the smaller square, which of the following systems of equations could be used to find the dimensions of the squares?

A

x + y І 32 x−yІ8

B

4x + 4y І 32 4x − 4y І 8

C

2x + 2y І 32 2y − 2x І 8

D 4x + 2y І 32 4x − 2y І 8

STAAR Algebra I

Released Test Questions

9.

10 Some values for two linear equations are shown in the tables below.

Equation 1 x

y

Equation 2

Page 5

x

y

2

5

5

11

−4

−7

−3

−13

5

11

0

−4

−1

−1

1

−1

What is the solution to the system of equations represented by these tables?

A

(2, 3)

B

(3, 5)

C

(−1, 1)

D (5, 11)

2011 Release