Question

2. If P(-1, 1) is the middle point of the line segment joining A-3, b) and B(1, b+ 4) then the value
of b is
(a) 1
(b) - 1
(c) 2
(d)0​

Answer 1

Step-by-step explanation:

Midpoint formula :-

P(y)=(y1+y2)/2

1=(b+b+4)/2

2=(2b+4) [Cross multiplying]

2-4=2b

-2=2b

-1=b

(b) is the correct answer

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