https://bestpaperhelp.com/wp-content/uploads/2020/07/mary-logo2-300x75.png00adminhttps://bestpaperhelp.com/wp-content/uploads/2020/07/mary-logo2-300x75.pngadmin2020-07-10 00:50:322020-07-10 00:50:32use slopes to determine whether they are parallel,perpendicular,or neither.