After the dilation, the coordinates of the vertex is (36, 48)
If we have a dilation of a scale factor K where the origin is the center of the dilation to a point (x, y), the image after the dilation will be:
(k*x, k*y).
Here the scale factor is k = 12, and the point is (3, 4).
So if we apply the dilation to that vertex, we get:
12*(3, 4) = (12*3, 12*4) = (36, 48).
After the dilation, the coordinates of the vertex is (36, 48)
If you want to learn more about dilations:
https://brainly.com/question/3457976
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