F(x) =ax+b f(1)= -5 f(-2)= -11 f(t) =3 Nilai t=...

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f(1) = a + b = -5
f(-2) = -2a + b = -11
______________-
3a = 6
a = 2

a + b = -5
b = -5 - 2
b = -7

f(x) = ax + b
f(x) = 2x - 7

f(t) = 2(t) - 7
3 = 2t - 7
2t = 3 + 7
2t = 10
t = 5

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