Buatlah sketsa grafik fungsi kuadrat Y= -2x^2+4x

itik potong sumbu x :
[tex] - 2 {x}^{2} + 4x = 0 \\ {x}^{2} - 2x = 0 \\ x(x - 2) = 0 \\ x = 0 \\ x = 2[/tex]
titik potong sumbu y :
y = 0 (0, 0)

puncak :
x = -4/2(-2) = 1
y = 16/8 = 2