Name:    Chapter 6 Test

Multiple Choice
Identify the choice that best completes the statement or answers the question.

1.

Determine which relation is a function.
 a. c. b. d.

2.

Determine which relation is a function.
 a. c. b. d.

Use the graph or table to write a linear function that relates y to x.

3.

 x –2 –1 0 1 y 6 3 0 –3
 a. y = x c. y = x b. y = x d. y = x

4.

 a. y = x + 6 c. y = x – 6 b. y = x + 6 d. y = x – 6

5.

Describe the relationship between the two quantities.
 a. The airplane speed stays the same. b. The speed of the airplane increases quickly, then stays at a constant speed. c. The airplane speed increases over time at an decreasing rate. d. The airplane speed is constant at first and then increases steadily as time passes.

6.

Describe the relationship between the two quantities.
 a. The cost of stamps increases instantly as the amount of stamps purchased increases. b. The cost of stamps decreases over time at an increasing rate. c. The cost of stamps increases at a constant rate. d. The cost of stamps is constant at first and then increases steadily as time passes.

Graph the function.

1.

2.

3.

4.

The table shows the water pressure p (in pounds per square inch) on a scuba diver at a depth of d feet.
 Depth, d 33 66 99 132 Pressure, p 29.4 44.1 58.8 73.5
a.   Graph the data.
b.   Write a linear function that relates the water pressure to the depth of a scuba diver.
c.   What is the water pressure at a depth of 58 feet? Round your answer to the nearest tenth.

Does the input-output table represent a linear function? Explain

5.

 Input, x 1 2 3 4 Output, y 2 6 10 14

6.

 Input, x 3 7 11 15 Output, y 9 11 13 11

7.

Sketch a graph that represents the situation.
You are jogging slowly as you warm up. Then you begin jogging more quickly.