Tolong dibantu ya teman☺

Mapel : Matematika
Kelas : X SMA
Bab : SPLKDV

Pembahasan :
x² - 5x - y + 4 = 0
→ y = x² - 5x + 4
→ 4y = 4x² - 20x + 16

x - 4y = 1
→ 4y = x - 1

Samakan...
4y = 4y
4x² - 20x + 16 = x - 1
4x² - 21x + 17 = 0
(4x - 17)(x - 1) = 0
x = 17/4
x = 1

Jika x = 17/4, maka :
4y = x - 1
4y = 17/4 - 1
4y = 13/4
y = 13/16

Jika x = 1, maka :
4y = x - 1
4y = 1 - 1
4y = 0
y = 0

Maka...
Hp : {(1 , 0)(17/4 , 13/16)}