<PRE><B>Question 436682</B>
The answer is 10.  You plot the points and then draw a triangle.    Then use the Pythagorean theorem to solve a^2+b^2 = c^2  (a is the height of the triangle, b is the base and c is the distance between the two points.

The height is 8 and the base is 6
8^2 +6^2 = c^2
64+38 = c^2
100 = c^2
10 = c
See vid eo explanation at 

http://youtu.be/oggfbh2YI0s  
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