(0,8) would be the solution of those two lines which will pass through this point .
A lot of points lie on any single line but the solution of two lines is the point where they both intersect .
Let us start observing the graph
Let us first check where does ( 0,8) lies on graph .
it is 0 unit movement on x axis and 8 unit up on y axis
we can see it easily that (0,8) is point where Line a and Line c are intersecting .
Answer : ( a and c ) the option number (1)