A triangle on a coordinate plane has one vertex 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 rule represents the dilation applied to the triangle?
A. (x,y) → ( 1/2 x, 1/2 y)
B. (x,y) → (2x,2y)
C. (x,y) → ( 1/7 x, 1/7 y)
D. (x,y) → (7x,7y)
