Multiple Choice Identify the
choice that best completes the statement or answers the question.
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Find the unit rate.
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1.
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660 miles in 10 hours
a. | 66 miles per hour | c. | 70 miles per hour | b. | 67 miles per hour | d. | 65 miles per
hour |
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2.
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80 minutes for 4 assignments
a. | 23 minutes per assignment | c. | 19 minutes per
assignment | b. | 22 minutes per assignment | d. | 20 minutes per assignment |
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3.
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$6.48 for 24 ounces
a. | $0.26 per ounce | c. | $0.27 per ounce | b. | $0.24 per ounce | d. | $0.31 per ounce |
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Use a graph to tell whether x and y are in a proportional
relationship.
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4.
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5.
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Use the table to write a proportion.
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6.
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| June | July | Hits | 18 | 30 | At Bats | 33 | x | | | |
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7.
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| Triangle 1 | Triangle 2 | Base (inches) | b | 10 | Height (inches) | 8 | 12 | | | |
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8.
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| Morning | Evening | Miles | 4 | 11 | Minutes | t | 88 | | | |
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Solve the proportion.
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9.
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10.
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a. | b = 72 | c. | b = 20 | b. | b = 28 | d. | b = 36 |
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11.
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a. | c = 9 | c. | c = 12 | b. | c = 8 | d. | c = 6 |
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12.
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a. | x = 7 | c. | x = 28 | b. | x = 14 | d. | x = 21 |
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13.
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Graph the line that passes through the two points. Then find the slope of the
line.
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14.
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(2, 2), (–3, –3)
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15.
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(5, 2), (0, 0)
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The graph of a proportional relationship passes through the given point and
(1, y). Find y.
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16.
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Given point: (12, 156)
a. | 13 | c. | 14 | b. | | d. | 145 |
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17.
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Given point: (6, 42)
a. | 7 | c. | 37 | b. | | d. | 9 |
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The variables x and y vary directly. Use the values to
find the constant of proportionality. Then write an equation that relates x and
y.
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18.
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y = 56; x = 7
a. | k = , y = x | c. | k = 8, | b. | k = 7, | d. | k = 56, |
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19.
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y = 18; x = 30
a. | k = , y = x | c. | k = , y = x | b. | k = 30 ,
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18 , |
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Other
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1.
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Extended Response Your grandmother paid for music lessons for you
and your cousin. The graph shows how much the lessons cost for each of you. a. Compare the steepness of the lines. What does this mean in
the context of the problem? b. Find the slope of each line. c. How much
more money do your cousin’s lessons cost each week than yours? d. Your
grandmother paid $495 for your lessons. How many weeks of lessons do you get?
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