Math Problem Statement

Decide whether the relation defined by the graph to the right defines a function, and give the domain and range.

Solution

The problem asks whether the relation defined by the graph on the right is a function, and to determine its domain and range.

Step 1: Determine if it's a function

To check if the graphed relation is a function, apply the Vertical Line Test: If a vertical line intersects the graph at more than one point, the graph does not represent a function.

From the graph, a vertical line would intersect the curve at more than one point, particularly around values of x=3x = 3 and x=7x = 7. This means that for at least some xx-values, there are multiple corresponding yy-values. Therefore, the graph does not represent a function.

Step 2: Domain and Range

  • Domain: The domain consists of all possible xx-values for which the graph is defined. The graph spans xx-values from 22 to 88, so the domain is: Domain:[2,8]\text{Domain}: [2, 8]
  • Range: The range consists of all possible yy-values for which the graph is defined. The graph covers yy-values from 11 to 99, so the range is: Range:[1,9]\text{Range}: [1, 9]

Final Answer:

  • Does the graph define a function? No.
  • Domain: [2, 8]
  • Range: [1, 9]

Would you like a further breakdown or have any specific questions?

Here are 5 related questions for further practice:

  1. How would the graph look if it defined a function?
  2. What would the domain and range be if only part of the graph were considered?
  3. Can a relation that fails the vertical line test ever be a function in another form?
  4. What is the difference between the domain and range of a graph?
  5. How can we use the vertical line test to analyze other types of curves?

Tip: Remember, the vertical line test is a quick and reliable way to determine if a graph represents a function!

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Math Problem Analysis

Mathematical Concepts

Functions
Graph Analysis
Vertical Line Test

Formulas

No specific formula; uses graph interpretation

Theorems

Vertical Line Test

Suitable Grade Level

Grades 9-12