The graph of the piecewise function \( f(x) \) is as follows:
- A horizontal line at \( y = -1 \) for \( x \leq -4 \).
- A line segment from \( (-4, -6) \) to \( (0, 2) \).
- A horizontal line at \( y = 3 \) for \( x > 0 \).
Plot these pieces on the given coordinate plane to visualize the function.