The coordinates of δabc are (-3, 4), (0, 4), and (2, 5). the coordinates of δa'b'c' are (-1.5, 2), (0, 2) and (1, 2.5). how do you know that the transformation is a dilation? a) the coordinates of δabc have been multiplied by a scale factor of 0.5. b) the coordinates of δabc have been multiplied by a scale factor of 2. c) the signs of the coordinates of δabc have remained the same. d) the coordinates of δabc have been divided by 1 2 .