The images for the triangles and their dilation are attached
How to interpret the diagrams
The first figure consist of triangle with vertices
X (6, -1), Y (-2, -4) and Z (1, 2)and dilation factor, k = 3
The center of dilation used was the origin with point D. This produced an image with labeled X' Y' Z'. The dilation resulted to enlargement, since k > 1
For dilation of 120 % we solve to remove the digit
= 120 % / 100
= 1.2
This will also produce enlarged image. The center of dilation used here is also the origin.