Question

Determine o vértice V da parábola que representa a funçâo quadrática f(x)=2x²-8x

Answer 1

• Xv = -b/2a

Xv = -(-8)/2.2

Xv = 8/4 = 2 ←←

• Yv = -▲/4a

▲ = b^2 - 4ac
▲ = (-8)^2 - 4.2.0
▲ = 64

Yv = -64/4.2

Yv = -64/8

Yv = -8 ←←

V (2, -8) ← ← ←