If A equal to( 3, -4) and midpoints of AB, AC are( 2, - 1)(4 - 5) then midpoint of BC is
Answers
Answer:
Step-by-step explanation:
A (3 , - 4) B (x,y) C (p,q)
mid point of AB = (2,- 1)
[ (3 + x)/2 , (- 4+y)/2 ] = (2 , - 1)
equating the co ordinates
(3 + x) /2 = 2 ( -4 + y)/2 = - 1
3 + x = 4 - 4 + y = - 2
x = 4 - 3 y = - 2 + 4
= 1 = 2
∴ B ( 1,2)
mid point of AC = (4,- 5)
[ (3+p)/2 , (- 4 +q)/2 ] = (4, -5)
equating the co-ordinates
(3 +p)/2 = 4 ( -4 +q)/2 = - 5
3 + p = 8 - 4 +q = - 10
p = 5 q = - 6
∴ C ( 5, -6)
mid point of BC = [ (1 +5)/2 , (2 - 6)/2]
= ( 6/2 , -4/2)
= ( 3, - 2)