Question

valendo 15 pontos, OBS:na questão C ñ da para desenhar aqui os graficos então manda foto

Answer 1

                     FUNÇÃO            CARACTERÍSTICA                ZERO
                  g(x) = - 2 + 5x            crescente                      - 2 + 5x = 0
                                                       a > 0                               5x = 2
                                                                                                x = 2/5

                  y = 4 - x                     decrescente                    4 - x = 0
                                                       a < 0                                 x = 4