Question

Suatu fungsi linier f (x) = ax+b . diketahui f (-2) = -1 dan f(5) = -15. tentukan

Answer 1

F(x) = ax+b
f(-2)= -2a+b= -1
f(5) =5a+b = -15_
-7a=14
a = -2
f(-2)= -2(-2)+b= -1
4+b= -1
b= -1-4
b=-5