answer: the correct option is d.
it is given that the triangle j'k'l' shown on the grid below is a dilation of triangle jkl using the origin as the center of dilation.
from the given graph it is noticed that k(4,8) and k'(2,4). let origin is defined by o and scale factor is defined by k, then
put these values in equation (1).
therefore scale factor is and option d is correct.