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1. |
Examine the graph below. Which statement is not true? |
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A. |
The number of sport utility vehicles sold in the U.S. has increased every year since 1988. |
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B. |
The greatest number of sport utility vehicles sold was in 1998. |
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C. |
In 1994, about 1,500,000 sport utility vehicles were sold in the U.S. |
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D. |
Sales of sport utility vehicles were about the same from 1988 through 1991. |
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Hint |
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2. |
The set of solutions to an equation in two variables is called the______. |
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A. |
domain set |
B. |
identity |
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C. |
solution set |
D. |
range set |
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Hint |
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3. |
If the range of the equation y = -x + 4 is {-4, -2, 4, 7}, what is the domain? |
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A. |
{-8, -6, 0, 3} |
B. |
{8, 6, 0, -3} |
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C. |
{7, 5, -1, -4} |
D. |
{9, 7, 1, -2} |
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Hint |
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4. |
If f(x) = -5x + 8, find f(-1). |
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A. |
40 |
B. |
3 |
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C. |
13 |
D. |
2 |
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Hint |
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5. |
A linear function that can be written in the form y = kx, where k 0, is called a(n)_______. |
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A. |
variable variation |
B. |
direct variation |
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C. |
functional variation |
D. |
equivalent variation |
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Hint |
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6. |
Consider the equation y = kx. Which statement is not true? |
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A. |
k is called the constant of variation. |
B. |
x is called the independent variable. |
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C. |
y is called the dependent variable. |
D. |
k is called the direction. |
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Hint |
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7. |
In the formula d = rt, the time t varies inversely as the rate r. A racing motorcycle traveling at 96 miles per hour completed one lap around a track in 1.5 minutes. How fast was the motorcycle traveling if it completed the next lap in 1.2 minutes? |
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A. |
76 mph |
B. |
120 mph |
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C. |
171.5 mph |
D. |
168.5 mph |
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Hint |
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8. |
Choose the graph that expresses
{(-3, 4), (-1, -5), (0, 2), (2, 3), (3, -4)}. |
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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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9. |
Which equation describes the graph? |
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A. |
y = 2 |
B. |
x = -2 |
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C. |
x = 2 |
D. |
y = -2 |
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Hint |
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10. |
Which equation describes the graph? |
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A. |
y =  x |
B. |
y = 2x |
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C. |
y = -2x |
D. |
y = -x |
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Hint |
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11. |
The relation in the graph is _________. |
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A. |
a function because each member of the domain is paired with exactly one member of the range |
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B. |
not a function because each member of the domain is paired with more than one member of the range |
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C. |
a function because each member of the range is paired with exactly one member of the domain |
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D. |
not a function because each member of the range is paired with more than one member of the domain |
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Hint |
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12. |
Which statement is not true of the graph? |
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A. |
The graph has inverse variation. |
B. |
y is inversely proportional to x. |
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C. |
The graph crosses the x- and y- axes. |
D. |
The constant k is positive. |
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Hint |
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