Bantu ih bantuuuuu Gambar lah grafik g=x2- 4x -5

Grafik Fungsi Kuadrat

y = x² - 4x - 5

Cari yg berpotong dgn sb x , (y = 0)

x² - 4x - 5 = 0
(x - 5)(x + 1) = 0
x = 5 v x = -1

(5,0) ( -1,0)

cari yg berpotong dgn sb y , (x = 0)
y = 0² - 4(0) - 5
y = -5

(0,-5)

cari sb. simetri

x = -b/2a
x = - (-4)/(2.1)
x = 2

y = 2² - 4(2) - 5
y = 4 - 8 - 5
y = 9

(2,9)

gabungkan smuanya nanti bakal mmbtk grafik spt digbr.