g(x) = ax + b
8 = a5 + b
-1 = a2 + b
--------------- (dikurangi)
9 = a3
9 : 3 = a
a = 3
8 = 3(5) + b
8 = 15 + b
8 - 15 = b
b = -7
jadi a = 3 dan b = -7
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2a + b = -1
dieliminasi, 3a = 9 , maka a = 3 dan b = -7.
g(x) = ax + b
8 = a5 + b
-1 = a2 + b
--------------- (dikurangi)
9 = a3
9 : 3 = a
a = 3
8 = a5 + b
8 = 3(5) + b
8 = 15 + b
8 - 15 = b
b = -7
jadi a = 3 dan b = -7