Answer:
Reflection across the x-axis:
The line of reflection is the x-axis itself. Any point (x, y) is reflected to (x, -y) across the x-axis.
Reflection across x = -6:
The line of reflection is the vertical line x = -6. Any point (x, y) is reflected to (-12 - x, y) across the line x = -6. In other words, the x-coordinate is mirrored with respect to x = -6.
Reflection across the y-axis:
The line of reflection is the y-axis itself. Any point (x, y) is reflected to (-x, y) across the y-axis.
Reflection across y = -6:
The line of reflection is the horizontal line y = -6. Any point (x, y) is reflected to (x, -12 - y) across the line y = -6. In this case, the y-coordinate is mirrored with respect to y = -6.
Please note that the reflection across a line involves mirroring the points across that line.