the straight lines x and passes through the point

The correct answer is: (b, a)

We should find through which point all the three lines pass through in common

$x+2y-9=0.....(i)$

$3x+5y-5=0....(ii)$

$ax+by-1=0......(iii)$

Intersection of $(i)$ and $(ii)$ is $y=22$ and $x=-2(22)+9=-35$
Putting this point in $ax+by-1=0$, we get $35a-22b+1=0$ 
For the three lines to be concurrent $35x-22y+1=0$ should pass through $(b,a)$

Hence (b,a) is correct option