Question

is the result of a transformation on figure a. which transformation would this?

Explanation:

Step1: Observe the figures

Figure A and Figure B are mirror - images of each other across the y - axis.

Step2: Recall transformation types

A reflection across the y - axis maps a point $(x,y)$ to $(-x,y)$. This is the transformation that has occurred here.

Answer:

Reflection across the y - axis