How do you find the asymptotes for y= (x + 2) / ( x + 3)?

Feb 23, 2016

vertical asymptote at x = - 3
horizontal asymptote at y = 1

Explanation:

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

solve : x + 3 = 0 → x = -3 is the equation

Horizontal asymptotes occur as lim_(x→±∞) f(x) → 0

If the degree of the numerator and the degree of the denominator are equal , as the are here , both of degree 1 , then the equation can be found by taking the ratio of leading coefficients.

$\Rightarrow y = \frac{1}{1} = 1 \text{ y = 1 is the equation }$

Here is the graph as an illustration.
graph{(x+2)/(x+3) [-10, 10, -5, 5]}