Give the Location of the Vertical Asymptote(s) If They Exist

Multiple Choice

Give the location of the vertical asymptote(s) if they exist, and state whether function values will change sign (positive to negative or negative to positive) from one side of the asymptote to the other.

A) x = 1, no
B) x = 1, yes
C) x = -4, no; x = 1, no
D) x = -4, yes; x = 1, yes