suatu fungsi ditentukan dengan rumus f(x) = ax + b. jika f(-3) = 9 dan f(5) = -7 tentukan nilai f(2) !

f(x)= ax + b

f(-3)= -3a + b = 9
f(5) = 5a + b = -7
_______________-
-8a = 16
a = 16/-8
a = -2
-3a + b = 9
-3(-2) + b = 9
6 + b = 9
b = 9-6
b= 3

f(2) = -2(2) + 3
= -4 + 3
= -1

semoga membantu, maaf kalo salah

F(x) = ax + b
F(-3) = 9
F(5) = -7
F(2) = ?

F(-3) = a(-3) + b
9 = -3a + b

F(5) = a(5) + b
-7 = 5a + b

-3a + b = 9
5a + b = -7
—————— -
-8 = 16
A = 16 / -8
A = -2

-3a + b = 9
-3(-2) + b = 9
6 + b = 9
B = 9 - 6
B = 3

F(2) = -2(2) + 3
= -4 + 3
= -1

Semoga membantu maaf kalau salah:)