Mirror Physics Help: Walking Towards a Mirror at 7 m/s

[peaceandlove]

Homework Statement

If you are walking towards a mirror at 7 m/s, how fast are you and your image approaching each other? Answer in m/s.

Homework Equations

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The Attempt at a Solution

I'm not sure how to solve this mathmatically but when I first looked at this question, I just automatically thought that the answer should be 7 m/s. Why or why not is that correct?

 

[Chewy0087]

Say you're 100m away from the mirror, in the image, how far away from the mirror (THROUGH) the mirror will your image be? use the mirror as a central point and then draw where you and your image are.