Fungsi f dinyatakan dengan rumus f(x) = ax + b, jika f(-1)=1 dan f(3)=9, maka rumus fungsinya adalah... (tolong dijawab pakai cara! bsok harus dikumpulin! )
nabilaberliani12
F (x) = ax + b f (-1) = 1 f (3) = 9 -1a + b = 1 3a + b = 9 _______ _ -4a = -8 a = -8/-4 a = 2
-1a + b = 1 -1.2 + b = 1 2 + b = 1 b = 1 - 2 b = 1
f (x) = ax + b f (x) = 2x + 1 semoga membantu -,- maaf ya kalo salah :)
f (-1) = 1
f (3) = 9
-1a + b = 1
3a + b = 9
_______ _
-4a = -8
a = -8/-4
a = 2
-1a + b = 1
-1.2 + b = 1
2 + b = 1
b = 1 - 2
b = 1
f (x) = ax + b
f (x) = 2x + 1
semoga membantu -,-
maaf ya kalo salah :)