Math Problem Statement

given the following graph of a function, determine the domain and range. Express your answer using interval notation.

Given the following graph of a function, determine the domain and range. Express your answer using interval notation.

Solution

To determine the domain and range of the function shown in the graph, let's analyze the key features:

Domain:

The domain is the set of all possible x-values (input values) for which the function is defined.

  • The graph shows that the function extends from the left side at x=x = -\infty (approaching negative infinity).
  • The graph stops at x=2x = 2, and there is an open circle at x=2x = 2, which indicates that the function is not defined at x=2x = 2.

Thus, the domain of the function is (,2)(-\infty, 2).

Range:

The range is the set of all possible y-values (output values) for which the function is defined.

  • The graph covers values of y from positive values near 4 and goes downward.
  • The lowest point on the graph occurs at y=5y = -5 with a solid point at (3,5)(3, -5), indicating that y=5y = -5 is included.
  • The open circle at (2,2)(2, -2) indicates that y=2y = -2 is not included.

Thus, the range of the function is (,2){5}(-\infty, -2) \cup \{-5\}.

Final Answer:

  • Domain: (,2)(-\infty, 2)
  • Range: (,2){5}(-\infty, -2) \cup \{-5\}

Would you like more details or further explanation on any aspect of this problem?


Here are some related questions for further practice:

  1. How do you determine if a function is continuous based on its graph?
  2. What is the significance of open and closed circles on a graph in terms of domain and range?
  3. Can a function have the same y-value for different x-values in its domain? If so, give an example.
  4. How does the concept of domain and range apply to real-world situations?
  5. What changes would occur to the domain and range if the open circle at (2,2)(2, -2) was filled in?

Tip: Always pay attention to open and closed circles on a graph; they indicate whether a point is included in the domain or range.

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Math Problem Analysis

Mathematical Concepts

Functions
Graph Analysis
Domain and Range

Formulas

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Theorems

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Suitable Grade Level

Grades 9-12