Question

Diketahui f fungsi linear dengan f(x) = ax + 1 dan f(6) = 4. tentukan:

A. bentuk fungsinya;
B. nilai f(-2)
C. nilai f(-2) + f(2)
D. bentuk fungsi f(2x-1)

tolong dijawab ya,, besok dikumpulin

Answer 1

B. f(6) = 6a+1
4-1/6= a
a= 3/6
nilai f(-2) = -2.3/6 + 1
-6/6+1 = -1+1 =0

Answer 2

F(x) =ax + 1
f(6) = 4 --> 6a +1 = 4
6a= 3 --> a = 1/2
a) f(x) = 1/2 x + 1
b. f(-2) =1/2(-2) + 1 = 0
c) f(-2) + f(2) = 1/2 (-2) + 1 + 1/2(2) + 1 = 0 + 2 = 2
d) f(2x-1) = 1/2 (2x-1) + 1 --> f(2x-1) = x -1/2 +1
f(2x-1) = x + 1/2