To determine the correct transformation characterizing the graph, one would typically look at the position of the graph relative to its original state.
- Reflection over the line y = -1 would mean that any point on the graph is mirrored across the line y = -1.
- Reflection over the line y = 1 would mean that any point on the graph is mirrored across the line y = 1.
- Reflection over the y-axis would mean that for any point (x, y) on the graph, there is a corresponding point (-x, y).
- Reflection over the x-axis would indicate that for any point (x, y) on the graph, there exists a point (x, -y).
Since I can't see the image you're referring to, please analyze the graph based on the descriptions above to determine which transformation has occurred. If the graph has simply flipped vertically while maintaining the same x-coordinates, it would be a reflection over the x-axis. If it has moved down to below y = -1 or up to above y = 1, then check accordingly between the reflection lines.