Question

Jawab dengan benar dan harus pakai cara.

Answer 1

4)f(x) = 9x + 7
f(2) = 9(2) + 7
= 18 + 7
=25

5)f(1)= a(1) + b = 4
f(3)= a(3) + b = 6
dieleminasi
a + b = 4
3a + b = 6
_________ -
-2a = -2
a = 1
dimasukkin ke yang a+b=4
1 + b = 4
b = 4 - 1
b = 3

f(x) = x + 3