A triangle on a coordinate plane has one verdict at (-7,-14) after a dilation with the origin as the center of dilation, the corresponding vertex of the dilated triangle is located at (-1, -2 ) which represents the dilation applied to the triangle

XY t0 1/7X ,1/ 7Y

This means that the triangle was dilated by a factor of 1/7 in both the x-direction and y-direction.