A woman who was trying on a wedding dress momentarily dropped into an episode of “Black Mirror” with a photo of her experience horrifying fans on social media.

Example Reflect the shape in the line x = 1. The line x = 1 is a vertical line which passes through -1 on the x -axis.

Example Reflect the shape in the line x = 1. The line x = 1 is a vertical line which passes through -1 on the x -axis.