Final answer:
The distance between you and your mirror image decreases at twice your walking speed.
Step-by-step explanation:
When you walk directly toward a mirror, the distance between you and your mirror image decreases at twice the speed of your walking speed. This is because the distance between you and the mirror is being reduced by your walking speed, and the distance between the mirror and your mirror image is also being reduced by your walking speed. Therefore, the total rate at which the distance decreases is twice your walking speed.
For example, if you walk toward a mirror with a speed of 2.6 m/s, the distance between you and your mirror image will decrease at a rate of 2.6 m/s x 2 = 5.2 m/s.