# How do you find the asymptotes for #y = (x + 1)/(x - 1)#?

##### 1 Answer

Jun 4, 2016

#### Answer:

vertical asymptote x = 1

horizontal asymptote y = 1

#### Explanation:

Vertical asymptotes occur as the denominator of a rational function tends to zero. To find the equation set the denominator equal to zero.

solve : x - 1 = 0 → x = 1 is the asymptote

Horizontal asymptotes occur as

#lim_(xto+-oo),ytoc" (a constant)"# divide terms on numerator/denominator by x

#(x/x+1/x)/(x/x-1/x)=(1+1/x)/(1-1/x)# as

#xto+-oo,yto(1+0)/(1-0)#

#rArry=1" is the asymptote"#

graph{(x+1)/(x-1) [-10, 10, -5, 5]}