Answer:
(6, 8)
Explanation:
A dilation scales an object on the coordinate plane using the scale factor, causing it to get bigger or smaller.
We are given that the point (3, 4) is dilated by 2; since 2 is greater than 1, this is an enlargement (in which the figure gets bigger).
So, all we need to do is multiply each of the coordinates by 2, like so:

Thus, the image of the point (3, 4), after being dilated by 2, is (6, 8).