Question

if (p, p) is solution of system of equations ax + by +(t-s) = 0 and bx + ay + (S-1)=0 then
which is true?
(A) 2r =S+t
(B) 2t=r+s
(C) 2s=r+t
(D) r +S+t=0​

Answer 1

put p into both

bp + ap + s-r =0

ap + bp + t-s =0

now

ap+bp = s-t

put this result into first one

t-s = s-r

2s=t+r

C is your answer.

Answer 2

Answer:

Step-by-step explanation:

bp + ap + s-r =0

ap + bp + t-s =0

now

ap+bp = s-t

put this result into first one

t-s = s-r

2s=t+r