Suatu fungsi dirumuskan dengan f (x) =a x + b jika f (2) =10 dan f (3) = 14 nilai a+b adalah?

f(x) = ax + b

f(2) = 2a + b = 10
f(3) = 3a + b = 14

2a + b = 10
3a + b = 14
________ _
- a = - 4
a = 4

2a + b = 10
8 + b = 10
b = 10 - 8
b = 2

a + b
= 4 + 2
= 6

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