In the coordinate plane, point b is 1 unit directly above point a. when points a and b are reflected about a horizontal line, their images are a' and b', respectively. if the coordinates of a' are (r, s), what are the coordinates of b' in terms of r and s? (r,s-1) (r,s+1) (r-1,s)

If Point B is 1 unit directly above Point A. When Points A and B are reflected about a horizontal line, the point B' will be 1 unit directly below Point A', then If the coordinates of A' are (r,s), the coordinates of B' are (r,s-1)

First option: (r, s-1)

Vertex is (-2,-3) and it's a minimum.