When reflecting a figure across y=1, each point in the original figure will have a corresponding point on the other side of the line, but with the same x-coordinate and the y-coordinate reflected about the line.
When reflecting a figure or object across the line y=1, each point in the original figure will have a corresponding point on the other side of the line, but with the same x-coordinate and the y-coordinate reflected about the line.
In other words, if a point (x, y) is on the original figure, its reflection across y=1 will be (x, 2-y).
For example, if the point (3, 4) is on the original figure, its reflection across y=1 will be (3, 2-4) which simplifies to (3, -2).
Similarly, if the point (-2, -5) is on the original figure, its reflection across y=1 will be (-2, 2-(-5)) which simplifies to (-2, 7).