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Bab FungsiMatematika SMP Kelas VIII
g(x) = ax + b
g(5) = 5a + b = -11
g(-3) = -3a + b = 13
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8a = -24
a = -3
-3a + b = 13
-3 . (-3) + b = 13
b = 13 - 9
b = 4
g(x) = -3x + 4
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f(x) = -3x + 4
f(4) = -3 . 4 + 4
= - 12 + 4
= -8