Which graph represents the function f(x)=5-5x2/x2?

I first assumed that you meant

                                           5(1-x^2)
f(x)=5-5x2/x2   =   > f(x) = --------------
                                                x^2.

If I were now to let x grow large without bound, the function value would approach -5.  This would be true coming from either direction, right or left.  Thus, if my interpretation is correct, the 2nd graph is likeliest to be correct.