Question

Tolong jawabnya pake cara
Ditentukan g(x) = -2x + b dan f (-2) = -1
a. tulislah bentuk fungsinya
b. hitunglah nilai f (2) dan f (-1)

Answer 1

G(x) = -2x + b

f(-2) = -1 ⇒ - 2(- 2) + b = -1
                         4 + b = -1
                               b = -1 - 4 = - 5

f(2) = -2x + b
     = -2(2) + (-5)
     = -4 + (-5) = -9

f(-1) = -2x + b
      = -2 (-1) + (-5)
      = 2 + (-5) = -3