fungsi

Diketahui fungsi f(x) = ax + b. Jika f(-2) = -11 dan f(4) = 7 nilai a + b adalah…. A. 3 B. –2 C. –5 D. –8 Jawab: B. Diketahui persamaan fungsi f(x) = ax + b Persamaan (i): f(–2) = – 11 → a (–2) + b = –11f(–2) = – 11 → […]