Question

Suatu fungsi di rumuskan f(x) =ax+b jika f(-2)=2 dan f(2)=10 maka nilai f(5) adalah..

Answer 1

Jawabannya addaaallaah 16

Answer 2

F(x) = ax+b
f(-2) = -2a+b = 2
f(2) = 2a+b = 10
= (-2a+b = 2) - (2a+b = 10)
= -4a = 10
a = 2,5

2a+b = 10
2 x 2,5 + b = 10
10b = 10
b = 1

Dit ; f(5) ?
f(x) = ax+b
f(5) = 2,5 x 5 + 1
f(5) = 12,5 +1
f(5) = 13,5