Diketahui f(x)=ax+b. Tentukan bentuk fungsi fungsi berikut jika

Jawaban:

f(1) = a + b = 3

f(2) = 2a + b = 5

-a = -2

a = 2

a + b = 3

2 + b = 3

b = 3 – 2 = 1

f(x) = 2x + 1

f(0) = 0a + b = -6

f(3) = 3a + b = -5

-3a = -1

a = 1/3

3.1/3 + b = -5

1 + b = -5

b = -5 -1

b = -6

f(x) = 1/3x – 6