Question

Fungsi g dinyatakan dengan rumus g(x)=px+q. Jika g(-5)= -27 dan g(3)= 13, maka g(8) adalah....

Answer 1

G(x) = px + q
g(-5) = -27 --> -5p + q = -27
g(3) = 13   --> 3p + q = 13  _
                         -8p  = - 40
                            p  = 5
3 (5) + q = 13
15 + q = 13
q = 13 - 15
q = -2

g(x) = 5x - 2

g(8) = 5 (8) - 2
       = 40 - 2
       = 38

semoga membantu ya :)

Answer 2

G(x) = px +q
g(-5) = p(-5) +q = -27
       = -5p +q = -27
g(3) = p(3) +q = 13
       = 3p +q = 13

-5p +q = -27
3p +q = 13    -
      -8p = -40
      p = 5

-5p +q = -27
-5(5) +q = -27
-25 +q = -27
q = -27 +25
q = -2

f(x) = 5x +(-2)
g(8) = 5(8) +(-2)
       = 40 +(-2)
       = 38

Itu jawabannya.