Conic Sections: Parabolas

Which correctly describes the parabola:  $y=-\frac{1}{2}\left(x+3\right)^2+4$  

Which correctly describes the parabola:  $y=2\left(x-1\right)^2-3$  

Which correctly describes the parabola:  $x=7\left(y-6\right)^2-2$  

What is the directrix of this parabola?

Identify the vertex.

Identify the vertex.

What is the correct ordered pair for the VERTEX point?

 $y\ =\ a\left(x\ -h\right)^2\ +\ k$   $x\ =\ a\left(x\ -k\right)^2\ +\ h$  
If a is positive, the parabola opens...

 $y\ =\ a\left(x\ -h\right)^2\ +\ k$   $x\ =\ a\left(x\ -k\right)^2\ +\ h$  
If a is negative, the parabola opens...