1. The graph of a certain situation resembles a straight horizontal line. In this situation, the rate of change would best be described as being..

a. zero

b. constant

c. changing

d. increasing

2. When examining a graph, which of the following would NOT be useful in determining the rate of change.

a. slope

b. (x1 + x2)/2

c. (y2 - y1)/(x2-x1)

d. rise / run

3. When examining the table of values of a linear relation, the first differences must be...

a. decreasing

b. the same

c. different

d. increasing

4. The equation of a linear relation must always be ...

a. decreasing order

b. increasing order

c. first order

d. second order

5. When examining the table of values of a quadratic relation, you will note that...

a. the first differences are the same, and the second differences are the same

b. the first differences are the same, and the second differences are different

c. the first differences are different, and the second differences are the same

d. the first differences are different, and the second differences are different

6. The equation of a quadratic relation must always be ...

a. decreasing order

b. increasing order

c. first order

d. second order