Question

Tolong ya skrg cepet

Answer 1

F(x) = ax + b
f(3) = 3a + b = 15
f(-2) = -2a + b = 10
          --------------------- ( - )
          5a = 5
            a = 5/5
            a = 1

f(3) = 3(1) + b = 15
     = 3 + b = 15
   b = 15 - 3
   b = 12

A). nilai a dan b, a = 1 dan b = 12
B). Rumus fungsi f(x) = x + 12
C). nilai f(7) = 7 + 12 = 19