Question

8
15. If M(3,-2) is the midpoint of AB in the given
figure, find the (i) co-ordinates of A and B.
o
у
D
А
Х
e
(-4, 5)P
M(3,-2)
C
O
B
Figure for Q.15 (0)
Figure for Q.15 (ii)​

Answer 1

Answer:

Given : A=(1,2)≡(x

1

,y

1

) and B=(3,−2)≡(x

2

,y

2

)

Let M=(x,y) be the midpoint of AB

x=(

2

x

1

+x

2

) and y=(

2

y

1

+y

2

)

Then, x=

2

1+3

and y=

2

2−2

⟹x=2 and y=0

∴M=(2,0)