tolongin plsss senin udh kumpul
FUngsi Linier
rumus fungsi
Penjelasan dengan langkah-langkah:
f(x)= ax + b
f(-2) = 7 dan f(3) = - 3
a) nilai a dan b
f(-2) = 7 --> -2a + b = 7
f(3) = 3 --> 3a + b = - 3___(-)
-a = 10
a= - 10
3a + b = - 3
b = - 3 - 3a
b = -3 -3(-10)
b = -3 + 30
b = 27
b) rumus fungsi
f(x)= ax + b
f(x)= -10 x + 27
c) nilai f(4) =
= -10(4) + 27
= -40 + 27
= - 13
