The graph you've uploaded appears to show a continuous curve representing a mathematical function. To determine the domain of the function, we need to observe the horizontal extent of the curve (along the x-axis).

From the graph:

• The curve stretches from $x \approx -9$ to $x \approx 9$.
• There are no breaks or restrictions within this interval, meaning the function is defined for all values within this range.

Thus, the domain of the function is approximately: $[-9, 9]$

This means the function is defined for all values of $x$ between -9 and 9, inclusive.

Would you like further clarification or additional details about how the domain is determined?

Here are 5 related questions that could expand on this concept:

1. What is the range of this function based on the graph?
2. How can we determine if the function is continuous over the domain?
3. What is the difference between domain and range?
4. How do you determine the critical points of a function from its graph?
5. What transformations could change the domain of a function?

Tip: The domain refers to all the possible input values (x-values) for which the function is defined. Make sure to always check for breaks, asymptotes, or restrictions when determining it from a graph.