Question

determine as coordenadas do vértice da parábola

y=x2 -2x+1

y= - x2 +9

Answer 1

Ola Luana

a)

x² - 2x + 1

a = 1
b = -2
c = 1

delta
d² = 4 - 4 = 0

vértices

Vx = -b/2a = 2/2 = 1
Vy = -d²/4a = 0


b) 

-x² + 9 = 0

a = -1
b = 0
c = 9

delta
d² = 36 

Vértices

Vx = -b/2a = 0
Vy = -d²/4a = -36/-4 = 9 

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