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Verified answer
Y = -5x - 6 --> y1y = x² ---> y2
Titik potong
y1 = y2
-5x - 6 = -x²
x² - 5x - 6 = 0
(x - 6) (x + 1) = 0
x1 = 6 , x2 = -1
Untuk x1 = 6
y = -x²
y = -(6)²
y1 = -36
Untuk x2 = -1
y = -x²
y = - (-1)²
y2 = -1
Titik potong ada 2 yaitu (x1, y1) = (6 , -36) dan (x2, y2)= (-1, -1)