parallel
They are intersecting lines.
neither
perpendicular
perpendicular
perpendicular
The lines that pass through points 4 -6 2 -3 and 6 5 3 3 on a grid are the lines y=x.
They are intersecting lines.
They are intersecting lines.
parallel
They are both vertical lines.
Mutually perpendicular lines.
A network of lines used for locating points is a coordinate grid
grid
Parallel
neither
perpendicular
perpendicular