" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
8m+n=19 dikurangkan
-5m=-15
m=3
n: 3(3)+n=4
n=-5
b.f(x)=3x-5
c.f(-5)=3(-5)-5=-20
f(3)= m(3)+n = 4
(1) 3m +n = 4
f(8)= m(8)+n = 19
(2) 8m +n = 19
dari persamaan (1) dan (2)
3m+n=4
8m+n=19
———— –
-5m = -15
m = 3
nilai m = 3 disubtitusikan kepersamaan (1)
3m +n=4
3(3)+n=4
9+n= 4
n =4-9
n= -5
jadi nilai m = 3 dan nilai n = -5
B. f(x) = ax+b
C. f(x) = mx+n
f(-5) = 3(-5) -5
f(-5)= -15-5
f(-5)= -20