The Distance Formula can be used to calculate the distance between two ordered pairs.  It uses the Pythagorean Theorem in making this calculation.  The Distance Formula is as follows: d = where  is the first ordered pair and  is the second ordered pair.

(1)  What is the distance between (7, 3) and (9, 1)?
(2)  What is the distance between (-4, 10) and (5, -2)?
(3)  What is the distance between (6, 21) and (-23, 5)?