1.the coordinates of the vertices of triangle abc are a(-1,3), b(1,2) and c(-3,-1). determine the slope of each side of the triangle and use that information to determine if the triangle is a right triangle or not. 2.the coordinates of the vertices of quadrilateral jklm are j(-3,2), k(4,-1), l(2,-5) and m(-5,-2). find the slope of each side of the quadrilateral and determine if the quadrilateral is a parallelogram.