If the distance from the center of dilation to one line is 9, and the distance from the center of dilation to a parallel line is 2.5, what scale factor should be used to map the first line onto the second?(1 point) The scale factor is the distance of the mapped image times the distance of the original image, 2.5×9=22.5. The scale factor is the distance of the original image over the distance of the mapped image, 92.5=3.6. The scale factor is the distance of the mapped image over the distance of the original image, 2.59≈0.28. The scale factor is equal to half of the distance to the original image, 92=4.5.