To find the values of $x$ for which $f(x) < 0$, we need to look at the portions of the graph where the function $f(x)$ lies below the x-axis. This means identifying the intervals on the x-axis where the y-values (outputs of the function) are negative.

Since I cannot see the graph, I cannot provide specific values or intervals. However, I can outline the general steps you would follow to find the solution:

1. Identify Intervals Below the X-Axis: Look at the graph and locate the sections where the curve is below the x-axis. These intervals correspond to the x-values where $f(x)$ is negative.
2. Determine Exact Points: Note the exact x-values at which the graph crosses the x-axis. These points are where $f(x) = 0$. The intervals of interest lie between these points.
3. Write the Interval Notation: Express the intervals where $f(x) < 0$ using proper interval notation. If the graph crosses the x-axis at points $x = a$ and $x = b$ and the function is negative between these points, then the interval would be $(a, b)$.

Please share the graph or more specific information about it to give a precise answer.

Do you have any questions or want to provide more details?

Relative Questions

1. What are the coordinates of the points where the graph intersects the x-axis?
2. Can you describe the general shape of the graph (e.g., linear, quadratic, cubic)?
3. Are there multiple intervals where the graph is below the x-axis?
4. Does the graph have any symmetry that could simplify the problem?
5. What are the values of $f(x)$ at specific points of interest on the graph?

Tip

When interpreting graphs, always pay close attention to the x-intercepts, as they mark transitions between positive and negative values of the function.