Question 867188
y = x^2 - 2x - 8   -8 the y-intercept
y = (x-1)^2 - 1 - 8
y = (x-1)^2 - 9.  Parabola Opening Upward:  V(1,-9)  x = 1 the Line of Symmetry
{{{drawing(300,300,   -10,10,-10,10,  blue(line(1,10,1,-10))  ,  
 grid(1),
circle(1, -9,0.4),
circle(0, -8,0.4),
graph( 300, 300, -10,10,-10,10,0,x^2 - 2x - 8 ))}}}