1. **State the problem:** Determine the domain of the function represented by a V-shaped graph centered at the origin (0,0). 2. **Understand the graph:** The graph is a V-shape with vertex at (0,0) and two lines extending diagonally upward to the left and right without bound. 3. **Recall the domain definition:** The domain of a function is the set of all possible input values ($x$-values) for which the function is defined. 4. **Analyze the graph's domain:** Since the V-shaped graph extends infinitely in both the negative and positive $x$ directions, there are no restrictions on $x$. 5. **Conclusion:** The domain is all real numbers, which can be written as $$(-\infty, \infty)$$. This means the function accepts any real number as input.