Diketahui fungsi f(x) = px + q, jika f (-5) = -27 dan f(3) = 13, maka nilai f(8) adalah
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f(-5) = -5p + q = -27
f(3) = 3p + q = 13
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-8p = -40
p = 5
- Nilai q
-5p + q = -27
q = -27 + 5p
q = -27 + 5(5)
q = -27 + 25
q = -2
- Nilai f(8)
f(x) = 5x - 2
f(8) = 5(8) - 2
f(8) = 40 - 2
f(8) = 38
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