# What is the axis of symmetry of the graph of y=-x^2-2x-1?

$y = a {x}^{2} + b x + c$ where $a = - 1 , b = - 2 \mathmr{and} c = - 1$
The Axis of Symmetry is given by the formula $x = - \frac{b}{2 a} = - \frac{- 2}{2 \cdot \left(- 1\right)}$
$x = - 1$
color (green)( x = -1 is the Axis of Symmetry of the Parabola with the equation $y = - {x}^{2} - 2 x - 1$