Fungsi f menyatakan suatu rumus f(x) = 4x+3, jika f (a)=7, dan F(-2) =b,maka nilai a+b adalah…

Jawaban:

f(x) = 4x + 3

f(a) = 4a + 3 = 7

4a = 4

a = 1

f(-2) = 4(-2) + 3 = b

-8 + 3 = b

b = -5

a + b = 1 + (-5) = -4

Jawaban:

-4

Penjelasan dengan langkah-langkah:

f(a)=4a+3=7

= 4a=7-3

= 4a=4

= a=1

f(-2)= 4×(-2)+3=b

-8+3=b

b=-5

a+b = 1+(-5) = -4