Question

Diketahui fungsi f(×)=a×+b. tentukan bentuk fungsi f jika f(3)=4 f(-1)=6 adalah...sekalian caranya ya tolong

Answer 1

F(3) = 3a + b = 4
f(-1) = -a + b = 6 -
---------------------
4a = -2
a = -1/2

f(-1) = 6
-(-1/2) + b = 6
b = 5 1/2

smg membantu, kl blh jdikan yg terbaik :(

Answer 2

F(x)=ax+b

f(3)=>3a+b=4
f(-1)=>-a+b=6 -->dieliminasi

4a=-2
a=-2

-a+b=6
-(-2)+b=6
b=6-2
b=4

f(x)=-2x+4