The image shows two shapes, and you're asked to select the transformation rule that maps Figure A onto Figure B.

Looking at the image, it seems that Figure B is a reflection of Figure A across the x-axis. This is because the orientation of the figure has been flipped vertically, while the horizontal positions of the points remain unchanged.

Therefore, the correct transformation rule is $r_{x=0}$, which represents a reflection across the x-axis.

Would you like further clarification or additional details on this?

Here are 5 related questions for practice:

1. What is the rule for reflecting a figure across the y-axis?
2. How do you rotate a figure 90° counterclockwise around the origin?
3. What are the coordinates of a point reflected across the x-axis?
4. What happens to the coordinates of a point if it is reflected over the line $y = x$?
5. How can you determine if two figures are congruent after a transformation?

Tip: When performing a reflection across the x-axis, the x-coordinates remain the same, while the y-coordinates change signs.