Question

Determine the vertex and the axis of symmetry for the function below: y = -x^2 + 2x + 1

Answer 1

hello : 
 y = -x^2 + 2x + 1
y= -(x²-2x+1-1)+1
y = -(x-1)² +2
the vertex is : ( 1, 2)
 axis of symmetry is the line of equation : x= 1