# How do graph, find the vertex and axis of symmetry for a quadratic equation f(x)= -x^2+2x+1?

$f \left(x\right) = - {x}^{2} + 2 x + 1$
x-coordinate of vertex: $x = \left(- \frac{b}{2 a}\right) = \frac{- 2}{-} 2 = 1$