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Unit 2 - Scatterplots and Functions Review

Quiz by Cecilia Argueta

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11 questions
Show answers
  • Q1
    Which of the following does NOT suggest a linear relationship between x and y?
    Answer Image
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    45s
  • Q2
    What is the best prediction of the total number of pages in a book with 9 chapters?
    Question Image
    300 pages
    270 pages
    120 pages
    240 pages
    120s
  • Q3
    Based on the scatterplot, what is the best prediction of the average number of hours a person spends at work every week if that person spends an average of 20 hours on recreational activities every week?
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    10 h
    40 h
    30 h
    50 h
    120s
  • Q4
    Based on this scatterplot, about how much money would a group of 12 people be expected to spend on food and beverages at this restaurant?
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    $100
    $60
    $120
    $150
    120s
  • Q5
    Based on the scatterplot, which is the best prediction of the number of points scored by a student who spends 20 minutes playing the video game?
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    300
    600
    900
    450
    120s
  • Q6
    What correlation is happening on the scatterplot below?
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    Positive association
    No apparent association
    Negative association
    120s
  • Q7
    What correlation is happening on the scatterplot below?
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    As calls increase everything increases.
    As calls decrease everything decreases.
    No relationship between cost of call and length of call.
    120s
  • Q8
    A relation contains the points (2, 1), (3, –2), (4, 1), (5, 2), and (6, –2). Which statement accurately describes this relation?
    The relation represents y as a function of x, because each value of x is associated with a single value of y.
    The relation represents y as a function of x, because each value of y is associated with two values of x.
    The relation does not represent y as a function of x, because each value of y is associated with two values of x.
    The relation does not represent y as a function of x, because each value of x is associated with a single value of y.
    120s
  • Q9
    Which graph represents y as a function of x?
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    120s
  • Q10
    Which set of ordered pairs represents y as a function of x?
    {(1, 0), (1, 2), (1, –2), (1, 4), (1, –4)}
    {(0, 0), (–1, 2), (–1, –2), (–2, 4), (–2, –4)}
    {(0, 0), (1, 1), (2, 4), (4, 9), (4, 16)}
    {(0, 0), (–1, 2), (–2, –2), (–3, 4), (–4, –4)}
    120s
  • Q11
    Which statement describes the mapping?
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    The mapping represents y as a function of x, because there are more x-values than different corresponding y-values.
    The mapping does not represent y as a function of x, because each x-value corresponds to exactly one y-value.
    The mapping does not represent y as a function of x, because there are more x-values than different corresponding y-values.
    The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value.
    120s

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