F(x) = ax + b , jika F (3) = 4 dan F (-2) = -11 maka nilai a dan b adalah

f(x) = ax +b

f(3) = a.3 +b = 4
f(-2)= a.-2 + b = -11
—————————— —
5a = 15
a = 3


f(-2) = 3.-2 +b = -11
-6 +b = -11
b = -11+6
b = -5