Question

which pair of the simultaneous equation have unique solution(a)x+y+2=0,x+y+3=0(b)2x-y+3=0,6x+3y+5=0(c)2x-y+3=0,-4x+2y-6=0(d)x+y+1=0,x-y+1=0

Answer 1

"If The system has a unique solution, It has independent set of Equations"
(a) us the answer