ketahui f(x)=ax+b jika f(-1)=4 dan f(-3)=-14 maka f(-2)adalaha

f(x) = ax + b

f(-1) = a(-1) + b = 4
f(-3) = a(-3) + b = -14

eliminasi :)

-a + b = 4
-3a + b = -14
__________-
2a = 18
a = 9

-a + b = 4
-9 + b = 4
b = 13

f(x) = 9x + 13

f(-2) = 9(-2) + 13
= -18 + 13
= -5