For function f(x), which pair of limits would verify the existence of a vertical asymptote at x = –1? Limit of f (x) as x approaches negative 1 minus = infinity and limit of f (x) as x approaches negative 1 plus = infinity
Limit of f (x) as x approaches negative infinity = negative 1 and limit of f (x) as x approaches infinity = negative 1
Limit of f (x) as x approaches negative 1 minus = c and limit of f (x) as x approaches negative 1 plus = c for some value of c
Limit of f (x) as x approaches c minus = negative 1 and limit of f (x) as x approaches c plus = negative 1 for some value c