Find the vertex, focus, and directrix for the following parabolas.

(a)
`( y - 4 )^(2) = 20 ( x - 1)`
vertex : 
focus : 
directrix:   

(b)
`y^(2) - 2 y = 4 x - 1^(2)` 

vertex : 
focus : 
directrix"   

(c)
`( x - 1 )^(2) = 4 ( y - 5 )` 

vertex : 
focus : 
directrix"   

(d)
`x^(2) + 40 x = 4 y - 16` 

vertex : 
focus : 
directrix"   

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