Question

determine as coodernadas ( x, y) do vertice da funçao y = - 2x + 8x -6?

Answer 1

✔OLÁ!!!

y = - 2x + 8x - 6

- 2x + 8x - 6 = 0

∆ = B² - 4 a.c

∆ = 8² - 4 . (- 2) . (- 6)

∆ = 64 - 48

∆ = 16

Xv = - b/2.a

Xv = - (+ 8)/2.(-2)

Xv = - 8/-4

Xv = 2

Yv = - ∆ /4.a

Yv = - (+ 16)/4.(-2)

Yv = - 16/-8

Yv = 2

( 2 , 2 )