Question

If P(-1, 1) is the middle point of the line segment joining Q(-3, b) and R(1, b+4), then b is​

Answer 1

Answer:

b = -1

Step-by-step explanation:

P is the mid point of QB

From mid-point formula

(-1,1) = ((-3+1)/2 , (b+b+4)/2)

1 = (2b+4)/2

1 = b+2

b=-1