jika f(x) = ax+b dengan f(1) = 0 dan f(0)=2 rumus fingsinya adalah

f(x) = ax+b

f(1) = a(1) + b
0 = a + b

f(0) = a(0) + b
2 = b

eleminasi
a + b = 0
b = 2
-------------‾
a = -2

jadi rumus fungsinya
a = -2
b = 2

f(x) = -2x + 2

Bab Fungsi
Matematika SMP Kelas VIII

f(x) = ax + b

f(1) = a + b = 0

f(0) = 0 + b = 2
b = 2

a + b = 0
a + 2 = 0
a = -2

f(x) = -2x + 2