Question

Rico is asked to graph a parabola given the equation y=−x2−2x
. At which point would he graph the vertex of the parabola?(1 point)

(−1,0)


(−1,2)


(−1,1)


(1,2)

Answer 1

Vertex is at (-1, 1).

Work: x_v = -b/(2a) = -(-2)/(2·-1) = -1, and y = -(-1)^2 - 2(-1) = 1. So choose (−1,1).