Question

Bantu ya, please
diketahui f(x) = ax + b. jika f(-1) = 5 dan f ( -3) = -13 , maka f (2) adalah
a 28 b 32

Answer 1

F(x) = ax + b
f(-1) = -a + b = 5
f(-3) = -3a + b = -13
------------------------------ -
              2a = 18
                 a = 9

Substitusi :
-a + b = 5
-9 + b = 5
       b = 14

f(2) = 2a + b = 2.9 + 14 = 18 + 14 = 32 (b)

Answer 2

F(x) = ax + b
f(-1)=5
f(-3) =-13
f(2)?
Jawab
f(-1) = -1a + b = 5
f(-3) = -3a + b =-13 -
             2a =18
               a = 18/2 =9 => b= 14
f(x)=ax + b
f(2)=9.2 + 14 = 18+14 =32