
Yefim S. answered 12/07/22
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y2 - 12y + 4x + 4 = 0; (y2 + 12y + 36) + 4x + 4 - 36 = 0; (y + 6)2 = - 4(x - 8).
This is horizontal parabola with vertex at point (8, - 6), p = - 1. Focus at point (7, - 6) and directrix x = 9