Quadrilateral WXYZ is on a coordinate plane. Segment YZ is on the line x + y = 7, and segment XW is on the line x + y = 3. Which statement proves how segments YZ and XW are related? (1 point)

They have slopes that are opposite reciprocals of 1 and −1 and are, therefore, perpendicular.

They have the same slope of 1 and are, therefore, parallel.

They have slopes that are opposite reciprocals of 0 and undefined and are, therefore, perpendicular.

They have the same slope of −1 and are, therefore, parallel.