)two similar triangles are shown on the following coordinate grid:

a coordinate plane is shown. triangle abc has vertices a at negative 3 comma 2, b at negative 1 comma 0, and c at negative 2 comma negative 1. triangle a prime b prime c prime has vertices a prime at 6 comma 4, b prime at 2 comma 0, and c prime at 4 comma negative 2.

which set of transformations has been performed on triangle abc to form triangle a′b′c′?

Reflection across the y-axis and a dilation by a factor of 2.

Step-by-step explanation:

Comparing the points from the pre-image, ABC, to the image, A'B'C', we see that both x- and y-coordinates seem to be doubled from the pre-image to the image. However, the sign of the x-coordinates in the image is different; this means that the x-coordinates are negated.  A reflection across the y-axis will negate the x-coordinates.

To double both the x- and y-coordinates, we would then apply a dilation by a factor of 2, as the scale factor gets multiplied by every coordinate.

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