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Exam

Name___________________________________

Important Test Information: Please keep in mind the there are several negative signs throughout the test. These signs sometimes appear at the very bottom in front of the fraction/slope or number. I just want to make sure that everyone is aware that they are to be treated as negative signs.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Solve the linear equation.

1)

-6.1 = x - 5.9

1)

_______

A)

0.2

B)

-12

C)

12

D)

-0.2

Find the slope of the line through the given points.

2)

( 8, -2) and ( 8, -1)

2)

_______

A)

- [pic]

B)

- [pic]

C)

0

D)

No slope

Write the equation of a line having the given slope and y-intercept.

3)

Slope = - [pic]; y-intercept = [pic]

3)

_______

A)

y = - [pic]x + [pic]

B)

y = [pic]x - [pic]

C)

y = [pic]x + [pic]

D)

y = - [pic]x - [pic]

Decide if the given number is a solution to the given equation.

4)

4x = 8; 7

4)

_______

A)

Yes

B)

No

Use the discriminant to determine how many real-number solutions the equation has.

5)

t2 + 8t + 16 = 0

5)

_______

A)

2

B)

1

C)

0

Without graphing, identify the slope and the y-intercept.

6)

7x + 9y = 46

6)

_______

A)

Slope [pic]; y-intercept [pic]

B)

Slope [pic]; y-intercept [pic]

C)

Slope - [pic]; y-intercept [pic]

D)

Slope - [pic]; y-intercept [pic]

Find the distance between the two points. Round an approximate result to the nearest hundredth.

7)

(- 3, -2) and (0, -11)

7)

_______

A)

4.75

B)

9.49

C)

9

D)

30

Find the slope of the line passing through the pair of points.

8)

( 9, -6) and ( 7, 3)

8)

_______

A)

- [pic]

B)

- [pic]

C)

- [pic]

D)

[pic]

Solve the problem.

9)

An accountant tabulated a firm's profits for four recent years in the following table:

[pic]

The accountant then fit both a linear graph and an exponential curve (seen below) to the data, in order to estimate future profits. Use the exponential graph to estimate the profits in the year 2002.

[pic]

9)

_______

A)

About $1,300,000

B)

About $750,000

C)

About $1,700,000

D)

About $1,000,000

Without graphing, identify the slope and the y-intercept.

10)

y = - [pic]x - 5

10)

______

A)

Slope [pic]; y-intercept (0, -5)

B)

Slope - [pic]; y-intercept (0, 5)

C)

Slope [pic]; y-intercept (0, 5)

D)

Slope - [pic]; y-intercept (0, -5)

Write the answer to the problem as an algebraic expression.

11)

Elizabeth earned 20 dollars a day at her job. Assuming a 5-day work week, how much did she earn in s weeks?

11)

______

A)

100 + s

B)

20 s

C)

20 + s

D)

100 s

State whether the equation represents a linear, quadratic, or exponential function.

12)

10x + 7 - y = 0

12)

______

A)

Linear

B)

Quadratic

C)

Exponential

D)

None of the above

Use the graph to find the specified value.

13)

[pic]

Find the value of x when y is 5.

13)

______

A)

x = -1

B)

x = 1

C)

x = -3

D)

x = 5

Find the other endpoint of a line segment with the given midpoint and one endpoint.

14)

Endpoint: ( 6, -1); Midpoint: [pic]

14)

______

A)

[pic]

B)

( 9, 5)

C)

[pic]

D)

[pic]

Substitute to find the value of the expression.

15)

In one store, bananas cost 60 cents per pound. The cost, in dollars, of x pounds of bananas is 0.6x. What is the cost of 2.3 pounds of bananas?

15)

______

A)

$1.58

B)

$0.38

C)

$1.38

D)

$3.83

16)

A basketball player's free throw percentage is m/a where m is the number of free throws made and a is the number attempted. If a player attempts 153 free throws and makes 129, what is his free throw percentage?

16)

______

A)

0.759

B)

1.186

C)

0.843

D)

0.885

Solve the prolem.

17)

Bert is 11 kilometers away from Brenda. Both begin to walk toward each other at the same time. Bert walks at 4 kilometers per hour. They will meet in 2 hours. How fast is Brenda walking?

17)

______

A)

4 kilometers per hour

B)

3.5 kilometers per hour

C)

2.5 kilometers per hour

D)

1.5 kilometers per hour

Write an equation of the line satisfying the given conditions.

18)

Parallel to the line y = -5x - 6 and a y-intercept of -2

18)

______

A)

y = -5x - 2

B)

y = 5x - 6

C)

y = - [pic]x - 2

D)

y = 5x + 2

19)

Vertical line through ( 6, -6)

19)

______

A)

x = 6

B)

y = 6

C)

x = -6

D)

y = -6

Find the midpoint of the line segment having the given endpoints.

20)

( 8, -4) and ( -7, 8)

20)

______

A)

M[pic]

B)

M[pic]

C)

M[pic]

D)

M[pic]

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