How do you graph y=(8x+3)/(2x-6) using asymptotes, intercepts, end behavior?

1 Answer
Nov 20, 2016

See the graph below

Explanation:

The domain of y,D_y=RR-{3}

As we cannot divide by 0, x!=3

A vertical asymptote is x=3

For the limits, we take the terms of highest coefficients in the numerator and the denominator

lim_(x->+-oo)y=lim_(x->+-oo)(8x)/(2x)=4

A horizontal asymptote is y=4

For the intercepts,

x=0, => , y=3/-6=-1/2

This is the y-intercept (0,-1/2)

When y=0,=>, x=-3/8#

This is the x-intercept, (-3/8,0)

lim_(x->3^(-))y=-oo

lim_(x->3^(+))y=+oo

graph{(y-(8x+3)/(2x-6))(y-4)(x-3)=0 [-22.8, 22.85, -11.4, 11.4]}