Question

the line ab has a mid point (2,5) a has coordinates of (1,2) find the coordinates of b

Answer 1

Hello !!

We need find the coordinates of the point (b).

Find xB.

xM = (xA + xB)/2

2 = (1 + xB)/2

1 + xB = 4

xB = 4 - 1

xB = 3

Find yB.

yM = (yA + yB)/2

5 = (2 + yB)/2

2 + yB = 10

yB = 10 - 2

yB = 8

Final result :

The coordinates of the point (b) is B(3 , 8).

I hope I have collaborated and have a great day !