| |
| |
1. |
The set of all second coordinates, or y-coordinates, of the ordered pairs in a relation is called the______. |
| |
|
A. |
related coordinates |
B. |
ordered coordinates |
| |
|
C. |
range |
D. |
domain |
| |
|
Hint |
|
| |
2. |
Examine the graph below. Which statement is not true? |
| |
|
 |
| |
|
A. |
In 1994, about 1,500,000 sport utility vehicles were sold in the U.S. |
| |
|
B. |
The greatest number of sport utility vehicles sold was in 1998. |
| |
|
C. |
Sales of sport utility vehicles were about the same from 1988 through 1991. |
| |
|
D. |
The number of sport utility vehicles sold in the U.S. has increased every year since 1988. |
| |
|
Hint |
|
| |
3. |
If a true statement results when the numbers in an ordered pair are substituted into an equation in two variables, then the ordered pair is a(n)______. |
| |
|
A. |
solution of the equation |
B. |
inverse relation |
| |
|
C. |
identity |
D. |
range set |
| |
|
Hint |
|
| |
4. |
Select the correct graph for the relation y = -2x if the domain is
{-2, -1, 0, 1, 2}. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
5. |
Which equation is a linear equation? |
| |
|
A. |
-2x = 5y + 1 |
B. |
y2 = 9 |
| |
|
C. |
3x + 3xy + y = 10 |
D. |
xy = 7 |
| |
|
Hint |
|
| |
6. |
Which graph represents the equation y = -x + 4? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
7. |
If f(x) = -5x + 8, find f(-1). |
| |
|
A. |
3 |
B. |
40 |
| |
|
C. |
2 |
D. |
13 |
| |
|
Hint |
|
| |
8. |
A linear function that can be written in the form y = kx, where k 0, is called a(n)_______. |
| |
|
A. |
equivalent variation |
B. |
functional variation |
| |
|
C. |
variable variation |
D. |
direct variation |
| |
|
Hint |
|
| |
9. |
In physics the equation F = ma means ''force equals mass times acceleration.'' The acceleration of a freely falling object is 9.8 m/s2. Use the function F(m) = 9.8m to find the force in Newtons (N) of a freely falling object with a mass of 14 g. |
| |
|
A. |
1.43 N |
B. |
137.2 N |
| |
|
C. |
8.2 N |
D. |
23.8 N |
| |
|
Hint |
|
| |
10. |
Which is the graph of y = -3x |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
11. |
Which statement is not true about a direct variation? |
| |
|
A. |
y is inversely proportional to x. |
B. |
The graph is straight line. |
| |
|
C. |
The constant of variation is  . |
D. |
y varies directly as x. |
| |
|
Hint |
|
| |
12. |
Alice and Gertrude take 8 hours to mow a lawn. If everyone mows the lawn at the same speed as Gertrude and Alice, how long would it take 4 people to mow a lawn? |
| |
|
A. |
3 hours |
B. |
6 hours |
| |
|
C. |
2 hours |
D. |
4 hours |
| |
|
Hint |
|
|
|