4x+8/x^2+3x-4
Vertical asymptotes are vertical lines which correspond to the zeroes of the denominator of a rational function.
the vertical asymptotes (which tell me where the graph can not go) will be at the values
4x+8/x^2+3x-4
if u solve the denominator x should not eqaul to 0
so x^2+3x-4=0 x=1,x=-4
