Diketahui fungsi g(×) = 3×-4 bila g(a) = -10 dan g (b)=-1 , maka nilai b-a adalah?

g(x) = 3x-4
g(a) = -10
-10 = 3a-4
-10 +4 = 3a
a = -2

g(b) = -1
-1 = 3b -4
-1+4 = 3b
b = 1

b-a = 1-(-2)
= 1+2
= 3