Graphing equation with calculator

If y=3x+12/(2x-12)what value does y approach as x gets infinitely larger?
The answer is 3/2.

When I put the expression above in my graphing calculator, I got some fancy graph with vertical asymptotes, and not one in line with the problem. I don't think I'm putting it in the calculator right. Any idea what I am doing wrongly?

If you calculate this limit

Then you'll come to the answer by dividing every term in the numerator and denominator by .

Make sure you enter the correct brackets in your calculator:
y=(3x+12)/(2x-12)

Edit: Nevermind. Thanks.

You're welcome! :)
You got the right graph now?