The question asks to find the value of $f(8)$ based on the graph of the function $y = f(x)$. To solve this, we need to find the y-coordinate corresponding to $x = 8$ on the graph.

Looking at the graph:

1. When $x = 8$, the graph indicates that the corresponding y-value (or $f(8)$) is approximately -6.

So, $f(8) = -6$.

Would you like further details or explanations? Here are five related questions to expand on this:

1. How do you interpret the graph of a function to find values like $f(x)$?
2. What is the significance of $f(x)$ in real-world applications?
3. Can you find $f(0)$ using the same graph?
4. How does the function behave as $x$ increases or decreases beyond the given range?
5. What is the general shape and type of function shown in the graph?

Tip: When reading values from a graph, always ensure the coordinates line up exactly with grid points to avoid approximation errors.