Question

Jika fungsi F(x) = 4x+b dan diketakui pula f(1) =3 serta f(-3)=11, maka nilai a dan b berturut turut adalah

Answer 1

F(1) = 4 (1) + b = 3
F(-3) = 4 (-3) + b = 11
________________ -
4 + b = - 8
b = - 8 - 4
b = - 12

a(1) + (-12) = 3
a - 12 = 3
a = 3 + 12
a = 15

Maaf kalau salah, cuma bantu jawab