Question 101510
Look at http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=101519, it is same even with parabola and hyperbola.

here is the graph for check :

{{{ graph( 600, 500, -10, 5, -20, 15,x^2+4*x-12) }}}

Looking at the graph, do you see the only difference.......yes there are 2 y intercepts. Good luck with your homework.