Question

dada a função y=x2-2x-24 qual o vertice da função x=1 y=-25

Answer 1

y=x²-2x-24

$Xv=- \frac{b}{2a} = \frac{-(-2)}{2.1} = \frac{2}{2} =1$

$Yv= \frac{-\triangle}{4a} =- \frac{100}{4} =-25$

Δ=b²-4ac
Δ=2²-4(-24)
Δ=4+96
Δ=100

V(1,-25)