diketahui fungsi f(x)=3x+10. jika f(-1)=a dan f(-2)=b nilai a+b adalah?

f(x) = 3x + 10

f(-1) = 3(-1) + 10 = a
f(-1) = -3 + 10 = a

f(-2) = 3(-2) + 10 = b
f(-2) = -6 + 10 = b

persamaan sudah didapat..
lalu dijumlahkan
f(-1) = -3 + 10 = 7 ....(a)
f(-2) = -6 + 10 = 4 .....(b)

a + b = 7 + 4 = 11
jadi a + b = 11

semoga mmbntu :) maaf kalo salah ^^

f(-1) = 3 (-1) + 10 = -3 + 10 = 7 (nilai a)

f(-2) = 3(-2) +10 = -6 + 10 = 4 (nilai b)

Maka nilai a+b = 7+4 = 11