Find the vertical and horizontal asymptotes for the graph of the given rational function. (Enter your answers as comma-separated lists of equations. If an answer does not exist, enter DNE.)

f(x)=4x+9/x-1

Find x- and y-intercepts of the graph. (If an answer does not exist, enter DNE.)

x-int (x,y)= ( )

y-int (x,y) = ( )

also sketch the graph of f.