## College Algebra (10th Edition)

$D.$
Axis of symmetry is parallel to the y-axis, opens down. According to Table 2, Equation: $\quad (x-h)^{2}=-4a(y-k)\quad$ With $\quad (h,k)=(0,0)$, we look for $\quad x^{2}=-4ay$ ... choice $D.$ Testing the point$\quad$ ($-2,-1):$ $(-2)^{2}=-4(-1)\quad$... yes.