If P(-1, 1) is the midpoint of the line segment joining A(-3, b) and B(1, b + 4) then b = ?


by Midpoint Formula we have,


and y


Finding value of b:



2 = 2b + 4


2 – 4 = 2b


b = -2/2


b = -1


Therefore the value of b is -1.

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