fungsi f(x)=ax+b jika f (3) =-10 dan f(-1) =6 tentukan nilai 2a-3b

3a+b=-10
-a+b=6
4a=-16
a=-4

-(-4)+b=6
b=2

2(-4)-3(2)=-8-6=-14

3a+b = -10
-a+b = 6
________-
4a = -16
a = -4

-a+b = 6
4+b = 6
b = 2

2*-4 - 3*2
-8 - 6 = -14