The graphs of the lines should like like the following.
That makes the answer: (-2, 1).
If you didn't get the correct answer, did you solve correctly for y? You should have gotten:
If you can't tell by looking at the screen the coordinates of the point, all you have to do is use your arrow keys on the TI-83. It will allow you to move to the point of intersection and the calculator will give the x and y values of the point at the bottom of the screen.