math

find the vertex,focus and equation of the direction of y=-1/16(x-6)^2+3

Y=1/2p(x-h)^2+k
p=8 h=6 k=3

(6,3)
so vertex is (6,3), focus is (6,-1) and directrix = y=7
Is this correct?

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  1. 1/2 p = -1/16 ... so p = ?

    vertex is correct

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  2. so would y=-1 and F(6,7)

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