Triangle DEF has vertices D (-4 , 1) E (2, 3), and F (2, 1) and is dilated by a factor of 3 using the point (0,0) as the point of dilation. The dilated triangle is named triangle D'E'F'. What are the coordinates of the vertices of the resulting triangle?
Point O is the center of dilation. Triangle D E F is dilated to create smaller triangle D prime E prime F prime. The length of O F prime is 3. The length of F prime F is 7.
What is the scale factor of the dilation of triangle DEF?
