First we have to graph the parabola:

[Always draw graphs when doing conic section problems].



Compare it to 



So the vertex is (h,k) = (5,3).

It opens to the right because 4a=8 or a=2 is positive.

So we sketch in the parabola with vertex (5,3).



|a|=2 is the distance from both the vertex to both the focus and the directrix.
The focus is a point inside the parabola and the directrix is a line
outside the parabola line, which are the green point and line drawn below:



So as we see from the graph, the focus is (7,3) and the directrix is x=3.

I went ahead and found the focus because in other problems you will have
to find the focus.

Edwin