Question

while standing on the sidewalk facing the road, you see a bicyclist passing by toward your right. in the reference frame of the bicyclist in which direction are you moving?​

Answer 1

Answer:

Consider frames X and Y:

If X sees Y moving to his right then Y must see X moving to his right.

If this is not true then one can choose one frame over the other ( a favored frame and this is not allowed)