IDNLearn.com: Your trusted source for finding accurate and reliable answers. Our community is ready to provide in-depth answers and practical solutions to any questions you may have.
Flipping a point across the y axis, the y coordinate should flip signs (negative if it was positive before, and vice versa). So
reflection across y axis = (-1 5/7, 1).
Similarly, reflecting across the x axis, the sign will also flip. So
reflection across x axis = (1 5/7, -1).