Question

ppz solve. Its easy but i m not getting answer.
class 10 coordinate geometry

Answer 1

using mid point formula

co-ordinates of mid point =

( x1+x2 / 2) and ( y1+y2 / 2)

3 = a+b + a - b /2 and 4 = b-a + a+b /2

3 = 2a /2 and 4 = 2b /2

3 = a and 4 = b

now ,

lhs = 3b - 4a = 3 × 4 - 4 × 3

= 12 -12

= 0

= rhs