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

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Answer 1 · 2015-05-06T09:37:00

The equation given to us is in the Standard form
$y = ax^2 + bx + c$ where $a = -1, b = -2 and c = -1$

The Axis of Symmetry is given by the formula $x = -b/(2a) = -(-2)/(2*(-1))$

$x = -1$

$color (green)( x = -1$ is the Axis of Symmetry of the Parabola with the equation $y=-x^2-2x-1$

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