F[x] = ax – b jika f[3] = – 6 dan f{-2] = 4 maka nilai dari f[-3] adalah
Jawaban:
f(–3) = –6
Penjelasan dengan langkah-langkah:
f(x) = ax + b
f(3) = 3a + b = -6
f(-2) = -2a + b = 4
________________ _
5a = 10
a = 2
3a + b = -6
3(2) + b = -6
6 + b = -6
b = 0
maka ,
f(–3) = –3(2) + 0
f(–3) = –6 + 0