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1. |
The set of all second coordinates, or y-coordinates, of the ordered pairs in a relation is called the______. |
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A. |
related coordinates |
B. |
domain |
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C. |
ordered coordinates |
D. |
range |
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Hint |
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2. |
Examine the graph below. Which statement is not true? |
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A. |
Sales of sport utility vehicles were about the same from 1988 through 1991. |
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B. |
The number of sport utility vehicles sold in the U.S. has increased every year since 1988. |
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C. |
The greatest number of sport utility vehicles sold was in 1998. |
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D. |
In 1994, about 1,500,000 sport utility vehicles were sold in the U.S. |
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Hint |
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3. |
Select the correct graph for the relation y = -2x if the domain is {-2, -1, 0, 1, 2}. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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4. |
Solve the equation 10x - 5y = 15 if the domain is {-2, -1, 0, 1, 2}. |
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A. |
{(2, -1), (-1, 1), (0, 3), (1, 5), (2, 7)} |
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B. |
{(-2, -7), (-1, -5), (0, -3), (1, -1), (2, 1)} |
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C. |
{(-2, -2), (-1, -1), (0, 0), (1, 1), (2, 2)} |
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D. |
{(-2, 2), (-1, 1), (0, 0), (1, 2), (2, 1)} |
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Hint |
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5. |
Consider the equation y = kx. Which statement is not true? |
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A. |
k is called the direction. |
B. |
k is called the constant of variation. |
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C. |
y is called the dependent variable. |
D. |
x is called the independent variable. |
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Hint |
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6. |
Which statement is not true about an inverse variation? |
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A. |
The product of the variables is constant. |
B. |
The constant of variation is . |
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C. |
If y varies inversely as x, then y is inversely proportional to x. |
D. |
In the equation xy = k, k is a constant. |
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Hint |
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7. |
Which is true of the equation y = cx where c is a constant? |
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A. |
The graph passes through the origin. |
B. |
The graph will be increasing. |
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C. |
The graph will always cross the x-axis at exactly one point. |
D. |
The graph will be decreasing. |
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Hint |
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8. |
Jasper has a firm belief that when two people have their first long phone conversation, they each spend the total time on the phone plus 3 minutes talking about television-related topics. Jasper just had his first telephone conversation with Alicia. If they talked on the phone for 48 minutes, how long would they have had to talk about television-related topics to support Jasper's theory? |
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A. |
15 minutes |
B. |
9 minutes |
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C. |
14 minutes |
D. |
12 minutes |
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Hint |
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9. |
Dion takes 5 minutes to prepare himself to read a book and then takes 1.4 minutes to read each page. How many minutes will it take Dion to read a 155 page book if he reads straight through? |
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A. |
207 minutes |
B. |
217 minutes |
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C. |
222 minutes |
D. |
212 minutes |
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Hint |
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10. |
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. |
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A. |
1.43 N |
B. |
8.2 N |
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C. |
137.2 N |
D. |
23.8 N |
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Hint |
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11. |
Suppose y varies directly as x and y = -10 when x = 5. Find x when y = 40. |
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A. |
-20 |
B. |
10 |
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C. |
20 |
D. |
-10 |
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Hint |
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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? |
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A. |
6 hours |
B. |
4 hours |
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C. |
3 hours |
D. |
2 hours |
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Hint |
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