When we reflect a point across the y-axis, the x-coordinate changes sign while the y-coordinate remains the same.
For the given points:
-
For the point (6, -3):
- The reflection across the y-axis is (-6, -3).
-
For the point (3, 1):
- The reflection across the y-axis is (-3, 1).
Therefore, the new points after reflection across the y-axis are (-6, -3) and (-3, 1).
So, the correct response is: (−6,−3) and (−3, 1).