Jika f(x)=ada + b,f(5)=17 dan f(-3)=1,tentukan f(10)

f(x) = ax + b
f(5) = 17
= a(5) + b = 17
= 5a + b = 17

f(-3) = 1
= -3a + b = 1

5a + b = 17
-3a + b = 1
----------------- -
8a = 16
a = 16 : 8 = 2

5a + b = 17
5(2) + b = 17
10 + b = 17
b = 17 - 10 = 7

f(10) ?...
f(10) = 2(x) + 7
= 2(10) + 7
= 20 + 7
= 27

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