Question

Which of the following is true for the rational function f(x)=x-4/x^2-16 ?

A) The vertical asymptote is x = 4.
B) The zero of the function is 4.
C) The vertical asymptote is x = -4.
D) The zeros of the function are 4 and -4.

Answer 1

you have

x-4 1
---------- = -------
(x+4)(x-4) x+4

vertical asymptote is when x+ 4 = 0 so x = -4

Answer 2

thanks

Answer 3

yw :)