Triangle is reflected across the y-axis and dilated to give triangle . The coordinates of the preimage are , , and . The coordinates of the image are , , and . What is the scale factor of the dilation? The graph shows a triangle A, B, and C with the nodes of A at (minus 2.5, 5), B at (minus 3.5, 2), and C at (minus 0.5, 2). Which transforms another triangle D, E, and F with the nodes of D at (5, 10), E at (7, 4), and F at (1, 4).