Answer:
Every point is moved so that it is 2/3 as far from the y-axis
Explanation:
Translation and reflection are "rigid" motions. They do not change the size or shape of the figure, so the resulting figure will be congruent with the original.
Dilation by a factor of 2/3 changes the size, so will not result in a congruent figure.
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Here the dilation is in the x-direction only. It is not a transformation we usually are interested in.