y ≤ x2 – 3x – 10 y ≥ x2 – x – 12
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y ≤ x2 – 3x – 10
y ≥ x2 – x – 12
Jawab:
y ≤ x2 – 3x – 10
Titik potong sumbu x (y = 0):
x2 – 3x – 10 = 0
(x – 5)(x + 2) = 0
x = 5 atau x = -2
(5, 0) (-2, 0)
Titik potong sumbu y (x = 0):
y = 02 – 3(0) – 10 = -10
(0, -10)
y ≥ x2 – x – 12
Titik potong sumbu x (y = 0):
x2 – x – 12= 0
(x + 3)(x – 4) = 0
x = -3 atau x = 4
(-3, 0) (4, 0)
Titik potong sumbu y (x = 0):
y = 02 – 0 – 12 = -12
(0, -12)
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