Name:    Quiz 4.3 - 4.4

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

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

1.

 x –4 –2 0 2 y –6 –3 0 3
 a. y = x c. y = x b. y = x d. y = x

2.

 x –7 0 7 14 y –2 6 14 22
 a. y = x – 6 c. y = x – 6 b. y = x + 6 d. y = x + 6

3.

 a. y = x + 3 c. y = x – 3 b. y = x – 3 d. y = x + 3

4.

 a. y = x + 2 c. y = x – 2 b. y = x + 2 d. y = x – 2

5.

 a. y = –2 c. y = x – 2 b. x = y – 2 d. x = –2

6.

Which equation does not belong with the other three?
 a. 11 = 3xy c. 22y = 6x b. y = x d. 11y = 3x

1.

Describe four ways to represent a function.

2.

Is the function represented by the graph a linear function? Explain.

Graph the data in the table. Decide whether the function is linear or nonlinear.

3.

 x 5 4 3 2 y 9 4 1 0

Does the table or graph represent a linear or nonlinear function? Explain.

4.

 x –3 0 3 6 y 0 –3 –6 –9

Does the equation represent a linear or nonlinear function? Explain.

5.

3 + xy = 8x y

6.

The table shows the height x (in feet) and number y of stories of four buildings. Does the table represent a linear or nonlinear function? Explain.
 Building Height, x Stories, y Sears Tower, Chicago 1450 110 Empire State Building, New York 1250 102 Aon Center, Chicago 1136 80 Chrysler Building, New York 1046 77