A line contains the points (6, -3) and (3, 1). when this line is reflected across the Y-axis, what are the two new points?
When a point is reflected across the y-axis, the x-coordinate of the point is negated.
Given the points (6, -3) and (3, 1), when reflected across the y-axis, the x-coordinate of each point is negated.
For the first point, (6, -3), the new x-coordinate would be -6, resulting in the point (-6, -3).
For the second point, (3, 1), the new x-coordinate would be -3, resulting in the point (-3, 1).
Therefore, the two new points after reflecting across the y-axis are (-6, -3) and (-3, 1).