Pertanyaan
Diketahui f(x) = px + q, f(-1) = -8 dan f(3)=12. Nilai f(-3) adalah
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f(-1) = -p + q = -8
f(3) = 3p + q = 12
____________-
-4p = -20
p = 5
-p + q = -8
q = -8 + 5
q = -3
f(x) = px + q
f(x) = 5x - 3
f(-3) = 5(-3) - 3
f(-3) = -15 - 3
f(-3) = -18
semoga berguna +_+
f(-1) = -p + q = -8
f(3) = 3p + q = 12
____________-
-4p = -20
p = 5
-p + q = -8
q = -8 + 5
q = -3
f(x) = px + q
f(x) = 5x - 3
f(-3) = 5(-3) - 3
f(-3) = -15 - 3
f(-3) = -18
semoga berguna +_+