How do you find the equation of an oblique/slant asymptote from a graph?

Question

campbell_st · Answer

if the asymptote is shown, find the slope and y intercept... 

the equation will be in the form 

y = mx + b

anonymous · Answer

if you have a rational function and the degree of the numerator is one more than the degree of the denominator, you will have a slant asymptote.
you can find it by division. you will get a quotient and a remainder.  
the quotient will be a  line, it is your slant asymptote,

anonymous · Answer

That's what I thought, just making sure. Thank you!
@satellite73 I know how to do it if there is a function. I was asking about how to find it if there is only a graph given.

anonymous · Answer

What if the exact points of the oblique asymptote aren't clear?

campbell_st · Answer

and if you don't have the function then I'd say maybe guess and check... but that doesn't solve the problem... I'd say you can't answer the question

anonymous · Answer

Okay I will estimate. Thank you.