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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. |
range |
B. |
domain |
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C. |
ordered coordinates |
D. |
related coordinates |
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Hint |
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2. |
Which table is represented by the graph? |
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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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3. |
Which ordered pair is a solution of y = 3x + 2? |
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A. |
(0, 2) |
B. |
(1, 1) |
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C. |
(4, 10) |
D. |
(2, 0) |
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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, 2), (-1, 1), (0, 0), (1, 2), (2, 1)} |
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B. |
{(-2, -2), (-1, -1), (0, 0), (1, 1), (2, 2)} |
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C. |
{(-2, -7), (-1, -5), (0, -3), (1, -1), (2, 1)} |
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D. |
{(2, -1), (-1, 1), (0, 3), (1, 5), (2, 7)} |
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Hint |
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5. |
An equation whose graph is a straight line is called a(n)________. |
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A. |
linear equation |
B. |
relation |
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C. |
ordered equation |
D. |
standard equation |
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Hint |
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6. |
Which graph does not represent a function? |
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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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7. |
Which equation is a direct variation? |
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A. |
y = 3 + 8x |
B. |
y = -5x |
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C. |
y = x - 2 |
D. |
x + y = 1 |
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Hint |
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8. |
The cost of a container of building staples varies directly as the weight in pounds. Suppose 2 pounds of staples costs $3.60. What is the cost of 5 pounds of staples? |
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A. |
$1.40 |
B. |
$5.25 |
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C. |
$9.00 |
D. |
$35.00 |
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Hint |
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9. |
An equation of the form xy = k, where k 0, is called a(n) _____. |
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A. |
inconsistant variation |
B. |
inverse variation |
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C. |
proportional variation |
D. |
direct variation |
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Hint |
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10. |
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. |
14 minutes |
B. |
9 minutes |
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C. |
12 minutes |
D. |
15 minutes |
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Hint |
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11. |
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. |
137.2 N |
B. |
23.8 N |
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C. |
8.2 N |
D. |
1.43 N |
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Hint |
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12. |
The formula for the area of a rectangle is A = lw. The two rectangles have the same area. Find the length of the second rectangle. |
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A. |
6 m |
B. |
12 m |
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C. |
4 m |
D. |
24 m |
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Hint |
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