The distance $d$ between points A (-3, 4) and B (5, 8), using the distance formula, is approximately $8.9$ units when rounded to the nearest tenth.

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Here are 5 related questions to expand on this:

1. How is the distance formula derived from the Pythagorean Theorem?
2. What are some practical applications of the distance formula in real life?
3. Can the distance formula be used in three-dimensional space? If yes, how?
4. How would the distance formula change if the coordinate system was different, like polar coordinates?
5. How can the distance formula help in determining if two points are equidistant from a third point?

Tip: Remember, the distance formula can be generalized to any number of dimensions, not just two!