Math Problem Statement

Using the given graph of the function f, find the following: (a) the intercepts, if any (b) its domain and range (c) the intervals on which it is increasing, decreasing, or constant (d) whether it is even, odd, or neither.

Solution

Let's analyze the graph and answer the questions based on it:

  1. Intercepts:

    • X-intercepts: These occur where the graph crosses the x-axis (y=0y = 0). From the graph, we can see that the function crosses the x-axis at two points:

      • (4,0)(-4, 0)
      • (2,0)(2, 0)
    • Y-intercept: This occurs where the graph crosses the y-axis (x=0x = 0). From the graph, the y-intercept is:

      • (0,2)(0, -2)
  2. Domain and Range:

    • Domain: The domain refers to all possible x-values for which the function is defined. From the graph, the function spans from x=4x = -4 to x=4x = 4.

      • Domain: [4,4][-4, 4]
    • Range: The range refers to all possible y-values of the function. From the graph, the lowest y-value is 4-4 and the highest y-value is 33.

      • Range: [4,3][-4, 3]
  3. Intervals of Increase, Decrease, and Constant Behavior:

    • Increasing: The function is increasing where the slope is positive. From the graph:

      • The function increases on the interval (2,4](2, 4].
    • Decreasing: The function is decreasing where the slope is negative. From the graph:

      • The function decreases on the intervals [4,2][-4, -2] and [0,2][0, 2].
    • Constant: The function is constant where the graph is flat. From the graph:

      • The function is constant on the interval [2,0][-2, 0].
  4. Even, Odd, or Neither:

    • To determine if the function is even, odd, or neither, we need to check symmetry:
      • Even: A function is even if f(x)=f(x)f(-x) = f(x), which implies symmetry about the y-axis.
      • Odd: A function is odd if f(x)=f(x)f(-x) = -f(x), which implies rotational symmetry about the origin.

    From the graph, the function does not show symmetry about the y-axis or origin, so it is neither even nor odd.


Would you like more details or clarifications on any part of the solution?

Here are 5 relative questions to expand the concept:

  1. What is the difference between domain and range in a function?
  2. How can you algebraically determine if a function is even or odd?
  3. What are the characteristics of an increasing or decreasing function?
  4. Why is it important to determine intercepts in the analysis of a function?
  5. How would the intervals of increase or decrease change if the function had a different slope?

Tip: When analyzing graphs, always carefully observe the points of intersection with the axes, which provide key details like intercepts and the function's overall behavior.

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Math Problem Analysis

Mathematical Concepts

Graph Analysis
Intercepts
Domain and Range
Function Behavior
Even and Odd Functions

Formulas

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Theorems

Symmetry Test for Even/Odd Functions

Suitable Grade Level

Grades 9-12