Question

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 ? Merit nation

Answer 1

HERE IS MY ANSWER

x1+x2÷2 is the formula for mid point theorem.

Therefore b+b+4÷2=1

2b+4÷2=1

2(b+2)/2=1

b+2=1. (taking 2 common in numerator and denominator)

b=-1