+128406 Focus = (-8, -3)
Directrix x = - 2
This parabola opens to the left because the focus is to the left of the directrix
For this reason....we can throw out answers B and D.....these parabolas open up/down
The vertex is [ (-8 - 2)/2, -3) = ( -10/2, -3) = (-5, -3)
We can stop here
"C" has a vertex of (-5, -3) and the presence of the " - " in front of the "12" indicates that this one opens to the left
