Answer:
B. Multiply each x-value in the table by -1.
Step-by-step explanation:
A point reflected across the y-axis has the same y-value, but the x-value is replaced by its opposite. For example, (-2, -31) reflected across the y-axis becomes (2, 31).
The appropriate choice is ...
... B. Multiply each x-value in the table by -1.
_____
Comment on the graph
The purple points are the ones in the given table. The red points are the same with their x-coordinate multiplied by -1. You can see that they are the reflection of the purple points across the y-axis. The lines joining the points are to help you see the points and which data set they are in.
