The graph shows a function that spans horizontally from $x = -3$ to $x = 5$. The left endpoint at $x = -3$ is an open circle, indicating that this point is not included in the domain. The right endpoint at $x = 5$ is a closed circle, indicating that this point is included in the domain.

Thus, the domain of the function in interval notation is: $(-3, 5]$

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Here are 5 related questions to deepen understanding:

1. How is the domain of a function defined?
2. What is the difference between open and closed intervals?
3. How would the domain change if the open circle at $x = -3$ were closed?
4. What would the range of this function be, based on the graph?
5. How can you find the domain of a more complex function algebraically?

Tip: Remember, an open circle means the value is not included, while a closed circle means the value is included in the domain or range.