Describe the end behavior of the graphed function.
a. f(x)→ +/-∞ as x→ +/-2
b. f(x)→ ∞ as x→ ∞ and f(x)→ -∞ as x→ -∞
c. f(x)→ ∞ as x→ 1 and f(x)→ -∞ as x→ -1
d. f(x)→ 1 as x→ +/-∞

End behavior is the extrememes

the plus and minus describe which side it is coming from

the first one
f(x) approaches +/- infinity as x aproaches +/-2
not clear enough, doesn't tell which way it approaches from and which coresponds with wich
not A.

b.
as f(x) approaches positive infinity, x approaches positive infinity
as f(x) approaches neagativeinifnity, x approaches neativ ininity
false, as x approaches negative and pos infinity, f(x) approaches y=1
not B.

c.
as x approaches 1, f(x) approaches initnify, false, since it doesn't specify from which side
as x approaches -1, f(x) appraches negative eininty false
not C

d.
as x aproaches negative and positivei nfinty, f(x) (or y) approaches 1
true
answer is D 

Where are the functions?