find the horizontal asymptote in the graph- in y= 3x^2/(x^2 -4)

y=3

but how?

You compare the degree of the denominator and numerator. If they are the same, then the ratio of the coeficcient is the retricemptote

oh wha if they differ?

If the denominator have a bigger degree, then the retricem is at y=0

if numerator have a bigger degree, no horizontal retricem

ya so if the denominator is always greater we will ALWAYS have y=0 ? EVERYTIME? .

if numerator have a bigger degree, no horizotal retricem but there is an oblique retricemtote

I think so

o i know about the slanting or oblique asymptote. so i can just check for the degree difference and decide as they decide which 1 we draw....but does it ever happen to get a horizontal and oblique asymtote?

I am not sure what you're trying to say

ok thanx .....