Write a rule to describe each transformation

k(-2,-1), l(-2,1), m(2,0)
to
k'(-4,-2), l’(-4,2), m'(4,0)

Polygon mnopq is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image m′n′o′p′q′. the coordinates of point m are (2, 4), and the coordinates of point n are (3, 5). the slope of is .