Question
Wed December 19, 2012 By:

for given points A(2,4) and B(-3,b) if AB = root of 26 find the possible values of B

Expert Reply
Thu December 20, 2012
Using distance formula,
AB2 = (-3-2)2 + (b-4)2 = 26
25 + b2 + 16 - 8b = 26
b2 - 8b + 15 = 0
(b - 5) (b - 3) = 0
Thus, b = 5 or 3
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