What are the coordinates of the triangle after performing a dilation with a scale factor of 3?

If you have the co-ordinate pairs (x, y), (r, s), and (a, b) for the triangle, perform the operations (3x, 3y), (3r, 3s), (3a, 3b). These will give you the knew points since the scale factor has been applied.

820,000 is the answr