tolong bantu jawab Dong kak plis
no asal
no asal
Jawab:
a = -3
b = 8
Penjelasan dengan langkah-langkah:
f(x) = ax + b
x = -2 -----> f(-2) = -2a + b
14 = -2a + b ............... ( 1 )
x = 3 -------> f( 3 ) = 3a + b
-1 = 3a + b ............ ( 2 )
14 = -2a + b
-1 = 3a + b
-------------------------- -
15 = -5a
a = -3
-1 = 3 x (-3) + b
-1 = -9 + b
b = 8
Jawaban:
-3 dan 8
Penjelasan dengan langkah-langkah:
- f(x) = ax + b
jika:
- f(-2) → 14
- f(3) → -1
-2a + b = 14
3a + b = -1 (-)
-5a = 15
a = -15/5
a = -3
3a + b = -1
3(-3) + b = -1
b = -1 - (-9)
b = 8
maka:
- nilai a → -3
- nilai b → 8
