Question

F(x) ax+b
jika f(1)=5
dan f(-1) = 1

tentukan nilai a dan b
tebtukan bentuk fungsinya !!!!



butuhh!! tolong bantuu!!!

Answer 1

F (1) = a+b =5 per f (-1) = -a+b = 1
2a=4
a=2
b=3

Answer 2

F(x) = ax + b
f(1) = 5 maka a + b = 5
f(-1) = 1 maka - a + b = 1
eliminasi:
a + b = 5
-a + b = 1
________ -
2a = 4
a = 2
b = 3
rumus fungsi: f(x) = 2x + 3