Question 2438
At least you should know how to type square correcly.
 y=x^2-5,
 or y+5 = x^2,
 vertex is (0,-5).
 Since y+5=x^2>=0, or y >= -5 the parabola opens up.

 x^2 = 4*1/4(y+5)= 4a(y+5), a = 1/4
 Focus = (0,-5+1/4) = (0,-19/4)
 Directrix: y = -5 -1/4 = -21/4

 Kenny