Math Problem Statement

Which features describe the graph? Select all that apply. A. domain: (-3, 4) B. range: (-3, 3) C. increasing: (-3, -1) D. decreasing: (-1, 4) E. positive: (-2, 2) F. negative: (-3, -2), (2, 4)

Solution

To determine the correct answers, let’s analyze the graph step by step, based on each option provided:

  1. Domain:

    • The domain represents the set of all xx-values for which the graph has points.
    • Observing the graph, the xx-values range from x=3x = -3 (open circle, so not included) to x=4x = 4 (closed circle, so included).
    • Therefore, the domain is (3,4](-3, 4], which matches Option A.
  2. Range:

    • The range represents the set of all yy-values for which the graph has points.
    • Observing the graph, the yy-values range from y=3y = -3 (open circle, so not included) to y=3y = 3.
    • Therefore, the range is (3,3](-3, 3], which matches Option B.
  3. Increasing:

    • The graph is increasing on intervals where it goes upward as xx increases.
    • Here, the graph increases from x=3x = -3 to x=1x = -1.
    • This matches Option C: increasing (3,1)(-3, -1).
  4. Decreasing:

    • The graph is decreasing on intervals where it goes downward as xx increases.
    • The graph decreases from x=1x = -1 to x=4x = 4.
    • This matches Option D: decreasing (1,4)(-1, 4).
  5. Positive:

    • The function is positive when it lies above the xx-axis (y>0y > 0).
    • Observing the graph, it is above the xx-axis between x=2x = -2 and x=2x = 2.
    • This matches Option E: positive (2,2)(-2, 2).
  6. Negative:

    • The function is negative when it lies below the xx-axis (y<0y < 0).
    • Observing the graph, it is below the xx-axis in the intervals (3,2)(-3, -2) and (2,4](2, 4].
    • This matches Option F: negative (3,2),(2,4](-3, -2), (2, 4].

Final Answer:

The correct selections are:

  • A. domain: (-3, 4]
  • B. range: (-3, 3]
  • C. increasing: (-3, -1)
  • D. decreasing: (-1, 4)
  • E. positive: (-2, 2)
  • F. negative: (-3, -2), (2, 4]

Would you like further clarification on any of these points, or do you need more details on a specific part of the analysis?


Relative Questions:

  1. What is the importance of identifying the domain and range in a function's graph?
  2. How can one determine intervals of increase and decrease in a function graphically?
  3. Why are open and closed circles used in graphs, and what do they signify?
  4. What are some real-world applications of interpreting function positivity and negativity?
  5. How do you determine if a function is positive or negative in a given interval?

Tip: Always pay close attention to open and closed circles on graphs as they indicate whether endpoints are included in the domain and range.

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Math Problem Analysis

Mathematical Concepts

Domain and Range
Increasing and Decreasing Intervals
Positive and Negative Intervals
Function Analysis

Formulas

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Theorems

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Suitable Grade Level

Grades 7-9