Question

Dada a função afim f(x)=-5+2, a resposta de (0)+f(2sobre5) -f (-2): a)2 b)-10 c)0 d)12 e)-8 Me ajudem.

Answer 1

f(x) = -5x+2
f(0) = -5x0+2 = 0+2 = 2
f(2/5) = -5x2/5+2 = -10/5+2 = -10/5+10/5 = 0
f(-2) = -5(-2) +2 = 10+2 = 12

f(0) + f(2/5) - f(-2) = 2+0-12 = 2-12 = -10

b