Find the vertices of -4x^2 + y^2 - 2y = 3.
See my other answer.....this is a vertical hyperbola
The equation is
(y - 1)^2 - x^2
_______ ___ = 1
4 1
The center is (0, 1)
The vertices are at ( 0, 1 - 2) = (0, -1) and (0, 1 + 2) = (0, 3)