Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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The graph shows a proportional relationship. Use the graph to identify the unit
rate. 
a. | 60 kilometers per hour | b. | 30 kilometers per hour | c. | 30 hours per
kilometer | d. |  kilometers per hour |
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2.
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The graph shows the distance Maria walks over time. Does she walk at a constant
or variable speed? How fast is Maria walking?  a. | constant speed; 2.5 mi/h | c. | constant speed; 1.25
mi/h | b. | constant speed; 5 mi/h | d. | variable speed; 5 mi/h |
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3.
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The graph shows the distance a boat is traveling over time. Does the boat travel
at a constant or variable speed? How fast is the boat traveling?  a. | constant speed; 30 mi/h | c. | constant speed; 15
mi/h | b. | constant speed; 60 mi/h | d. | variable speed; 60 mi/h |
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4.
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Determine whether the data sets show a direct variation. Length (in) | Number of Books | 10 | 26 | 14 | 28 | 15 | 30 | 19 | 41 | 20 | 43 | | |
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5.
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Given that y varies directly with x, find the equation of direct
variation when  and  . a. | y =  x | c. | xy =  | b. | y =  x | d. | xy =  |
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6.
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Determine whether the data sets show a direct variation. Number of Baskets | Cost | 5 | $10 | 9 | $18 | 10 | $20 | 13 | $26 | 15 | $30 | | |
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7.
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Determine whether the data sets show a direct variation. Number of People | Time
(min) | 10 | 4 | 11 | 4.4 | 13 | 5.2 | 17 | 6.8 | 19 | 7.6 | | |
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8.
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The cost C, in dollars, for advertising on a social networking website is
proportional to the number n of clicks on the advertisement. Suppose a business is charged $45
for 180 clicks on its advertisements. What is the slope of the line that represents the relationship
between cost and clicks?
a. | 1 | b. | 4 | c. | 0.25 | d. | The slope cannot be
determined. |
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9.
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Graph the equation  and tell whether it is linear. a. | 
linear | c. | 
linear | b. | 
linear | d. | 
linear |
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10.
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The number of pages p that a laser printer prints is proportional to the
printing time t, in minutes. Printer A prints 104 pages in 4 minutes. The table shows the
relationship between the amount of time and the number of pages printed for printer B. Which printer
prints more slowly? Time
(minutes) | Pages
printed | 3 | 84 | 5 | 140 | 9 | 252 | 14 | 392 | | |
a. | Printer B | b. | Printer A | c. | Printer A and
printer B have the same unit rate. | d. | The relationship cannot be
determined. |
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