Respuesta :

dalendrk
f(x) = -4x - 5

Subtitute the value of x to the equation:

f(-1) = -4 · (-1) - 5 = 4 - 5 = -1
Willchemistry
f (x ) = - 4 x - 5       for x = -1

f(-1) = - 4*(-1) - 5

f(-1) =  + 4 - 5

f(-1) = -1

hope this helps!