Answer
parabola, vertex $(0,1)$, focus $(0,0)$, and directrix $y=2$.
Work Step by Step
1. Given $x^2+4y=4$ or $x^2=-4(y-1)$, we can identify it as a parabola opens downward with $p=1$.
2. We can find its vertex $(0,1)$, focus $(0,0)$, and directrix $y=2$.
