The image you uploaded displays a graph of a linear function. The question asks for the domain of the function, which refers to all the possible values of $x$ (the input values) that are valid for the function.

From the graph, the function appears to be defined over a specific range along the $x$-axis. The line starts around $x = -4$ and ends around $x = 4$, which suggests that the domain is limited between these two points. Hence, the domain of the function would be the closed interval:

$-4 \leq x \leq 4$

This is the correct domain of the function as it corresponds to the range where the function is defined on the graph.

Do you need further explanation on how domains are determined or any other details?

5 related questions:

1. What is the range of this function based on the graph?
2. How do you find the slope of a line given its graph?
3. What does it mean when a function has a restricted domain?
4. Can a linear function ever have a domain that is not all real numbers?
5. How does the domain of a function differ from its range?

Tip:

When determining the domain from a graph, always check the extent of the $x$-axis values where the graph is present or defined.