Quadrilateral WXYZ is on a coordinate plane. Segment XY is on the line x − 3y = −12, and segment WZ is on the x − 3y = −6. Which statement proves how segments XY and WZ are related? They have opposite reciprocals slopes of one third and −3 and are, therefore, perpendicular.
They have the same slope of negative one third and are, therefore, parallel.
They have opposite reciprocals slopes of negative one third and 3 and are, therefore, perpendicular.
They have the same slope of one third and are, therefore, parallel.