diketahui fungsi f(x)=ax+b,human f(-2)=-5 dan f(3)=15 Nilai f(-5)+(1)= tolong Pakai caranya

f(x) = ax + b

f(-2) = -2a + b = -5
f(3) = 3a + b = 15

3a + b = 15
-2a + b = -5
__________ -
5a = 20
a = 4
automatis b = 3

= f(5) + f(1)
= (4.-5+3) + (4.1 + 3)
= - 17 + 7
= - 10

koreksi bila salah,
semoga membantu