To find the value of $f(-3)$ from the graph:

1. Look at the graph of $y = f(x)$.
2. Find the point where $x = -3$ on the x-axis.
3. From this point, trace upward or downward to the curve of the function.
4. The corresponding $y$-value at this point is $f(-3)$.

By observing the graph, when $x = -3$, the curve intersects the point $y = 6$.

Thus, $f(-3) = 6$.

Would you like any further explanation or details on this?

Here are 5 related questions you might want to consider:

1. What is $f(0)$ from the graph?
2. How would you find the maximum value of $f(x)$ from the graph?
3. What are the x-intercepts of the function $f(x)$?
4. How do you determine if $f(x)$ is increasing or decreasing?
5. Can you identify any symmetry in the graph of $f(x)$?

Tip: When analyzing a graph, always check both the $x$- and $y$-coordinates carefully to ensure accuracy.