Diketahui f(x) =ax+b jika, f(2)=5 dan f(3)=10 maka nilai f (-4)=

-25 kayanya, maaf kalo salah

f(x)=ax+b
f(2)=5
f(3)=10
Eliminasi
2a+b=5
3a+b=10
_______-
-1a = -5
a = -5
___
-1
a = 5

Substitusi
2a+b= 5
2.5+b=5
10 +b=5
b=5-10
b= -5

f(-4)= -4.5+ (-5)
= -20 - 5
= -25