Which of these statements are correct about two parallel lines in a coordinate plane? Select three that apply.

If they are each translated 7 units to the left, they will remain parallel.
If they are each reflected across the line y = x, they will remain parallel.
If they are each rotated 180° about the origin, they will not remain parallel.
If they are each reflected across the x–axis, they will not remain parallel.
If they are each rotated 270° about the origin, they will remain parallel.
If they are each translated 9 units down, they will not remain parallel.