The points A,B and C have coordinates (0,5),(b,7) and (-4,9),respectively.If AB=BC,find the value of b.

Answer 1

A(0,5), B(b,7) and C(-4,9) with AB=BC, find b

b=-2

AB = distance from (0,5) to (2,7) = sqr(4+4) = sqr8

BC = distance from (-2,7) to (-4,9) = sqr(4+4) = sqr8