fungsi f menyatakan suatu rumus f(x) = 4x+3, jika f (a)=7, dan F(-2) =b,maka nilai a+b adalah...
tolong jawab pakai jalannya
tolong jawab pakai jalannya
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
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