Diketahui f(x) = 7x – 13,jika x adalah bilangan bulat

Jawaban:

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Penjelasan dengan langkah-langkah:

f(x) = 7x – 13

a. f(-2) = 7(-2) – 13

= -14 – 13

= -27

f(-5) = 7(-5) – 13

= -35 – 13

= -48

b. f(b – 1) = 7(b – 1) – 13

8 = 7b – 7 – 13

8 = 7b – 20

8 + 20 = 7b

28 = 7b

b = 28/7

b = 4