Question

F(×)=a× + b
f(2)=12 dan f(-3)= -23
tentukan f(4)+(-2)(

Answer 1

f(x) = ax+b
f(2) = 12  --> 2a+b = 12
f(-3) = -23 --> -3a+b = -23  _
                       5b = 35 --> b = 7
2a+7 = 12
2a =12-7
a = 5/2
f(x) = 5/2x+7
f(4) + f(-2) = 5/2.4+7 + 5/2.(-2)+7 = 10+7-5+7 = 19
semoga membantu ya.. ^_^

Answer 2

F(x)=ax+b
f(2)=2a+b=12 dikali 3
f(-3)=-3a+b=-23 dikali 2
-6a+2b=-46
6a+3b=36
ditambah
5b=10
b=2
2a+b=12
2a=10
a=5
f(x)=5x+2
f(4)=5(4)+2
=22
f(-2)=5(-2)+2
=-8
hasilnya 14