Question

Graph the quadratic y=x^2+2x+4
. What is the axis of symmetry?(1 point)

Answer 1

For y = x^2 + 2x + 4, a = 1 and b = 2, so the axis is x = -b/(2a) = -2/2 = -1.

(The vertex is at x = -1 giving y = (-1)^2 + 2(-1) + 4 = 3, so the vertex is (-1, 3). The parabola opens upward.)