3. Diketahui fungsi g:x ax + b. Jika g(2) = 12 dan g(-3) = -13, tentukanlah:
a. Rumus fungsi g !
b. Hasil dari g(8) - g(-2)
c. Nilai x, jika g(x) =22
menggunakan cara![]()
a. Rumus fungsi g !
b. Hasil dari g(8) - g(-2)
c. Nilai x, jika g(x) =22
menggunakan cara
Penjelasan dengan langkah-langkah:
g(x) = ax + b
g(2) = a(2) + b
= 2a + b = 12
g(-3) = a(-3) + b
= -3a + b = -13
2a + b = 12
-3a + b = -13
___________ -
5a + 0 = 25
5a = 25
a = 25/5
= 5
2a + b = 12
2(5) + b = 12
10 + b = 12
b = 12-10
b = 2
a. rumus fungsi
= g(x) = ax + b
g(x) = 5x + 2
b. Hasil dari g(8) - g(-2)
= g(x) = 5x + 2
g(8) = 5(8) + 2
= 40+2
= 42
= 9(-2) = 5x + 2
= 5(-2) + 2
= -10 +2
= -8
= g(8) - g(-2)
= 42-(-8) = 50
c. nilai x, jika g(x) = 22
= g(x) = 5x + 2
= 5x + 2 = 22
= 5x = 22-2
= 5x = 20
= x = 20/5
= x = 4
[answer.2.content]
