G(x)=ax + b.jika G (-2) = -4 dan G (-6)=12, maka bentuk fungsi G adalah...

g(x) = ax + b
g(-2) = -2a + b = - 4
g(-6) = - 6a + b = 12
-----------------------------(-)
4a = - 16
a = - 4
-2a + b = -4
-2(-4) + b = -4
b = -4 - 8
b = - 12
g(x) = - 4x - 12