Determine X Values for Which f(x) > 0 Using a Graph

First, we examine the provided graph of the quadratic function $f(x)$. The graph clearly shows the x-intercepts (where the function crosses the x-axis) at $x = -3$ and $x = 3$.

Since the quadratic function appears to be a standard parabola opening upwards, the portion of the graph between these two x-intercepts will be above the x-axis, which means that $f(x) > 0$ in this interval.

The intervals to the left of $x = -3$ and to the right of $x = 3$ will be where the graph lies below the x-axis, meaning $f(x) < 0$ in those regions.

Thus, the graph shows that the function $f(x)$ is positive between $x = -3$ and $x = 3$. Therefore, the solution to the problem is:

$-3 < x < 3$