diketahui fungsi g(x)= 2x + 11 dan g(a) = 5 nila a adalah

Bab Fungsi
Matematika SMP Kelas VIII

g(x) = 2x + 11

g(a) = 5
2a + 11 = 5
2a = 5 - 11
a = -6/2
a = -3

Penyelesaian :

Fungsi
___________
g(x) = 2x + 11
g(a) = 5
a = ?

2x + 11 = 5
2x = 5 - 11
2x = -6
x = -3

=> a = -3.

Salam Alaikum.