Question

(-1, 1) are the co-ordinates of the mid point of line AB joining the points A(-3,b) and B(1,b+4), then the value of b is​

Answer 1

Answer:

Step-by-step explanation:

midpoint coordinates=(-1,1)

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

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

now equate the coordinates

2b+4/2=1

2b+4=2

2b=-2

b=-1