1. **State the problem:** We need to find the excluded value for the given rational function based on its graph. 2. **Understand excluded values:** Excluded values occur where the function is undefined, typically where the denominator is zero in a rational function. 3. **Analyze the graph:** The graph shows a vertical asymptote at $x=0$, meaning the function is undefined at $x=0$. 4. **Conclusion:** The excluded value is $x=0$ because the function cannot be evaluated there. **Final answer:** The excluded value is $x=0$.