Question

Find the vertex of this parabola:
y=x^2-2x-5

Answer 1

vertex = -b/2a
= 2/2 = 1
when x=1 y = 1-2-5 = -6

vertex ia at (1,-6)

Answer 2

\[y=(x-1)^2-5-(1*1)
\[y=(x-1)^2-6\]x=1
y=-6