Reflection Line 3406E2

1. The problem states that Shape B is a reflection of Shape A across a line. 2. From the graph description, the mirror line is vertical and located at $x = -2$. 3. The equation of a vertical line is $x = c$, where $c$ is the x-coordinate of the line. 4. Since the mirror line is at $x = -2$, the equation of the line of reflection is: $$x = -2$$ 5. Therefore, the completed sentence is: Shape B is a reflection of shape A in the line with equation $x = -2$.