Reflection is when a shape is reflected ... grid with negative numbers on the horizontal x-axis and vertical y-axis. The point where the x-axis and the y-axis cross is called the origin.

Reflect the shape in the line \(x = -1\). The line \(x = -1\) is a vertical line which passes through -1 on the \(x\)-axis. The line \(y = 1\) is a horizontal line which passes through 1 on the ...