Question

quais sao as cordenadas do vertice da funçao
y=x²-2x-3

Answer 1

Xv= -b/2a
Xv= -(-2)/2•1
Xv= 2/2
Xv= 1

Y= x²-2x-3
substituindo o Xv,teremos o Yv:
Yv= 1²-2•1-3
Yv= 1-2-3
Yv= -4

Logo as coordenadas do vértice são:
( 1 , 4 )