Determine os valores de m de modo que a função real f(x)=(2-5m)x+7 seja decrescente

Determine os valores de m de modo que a função real f(x)=(2-5m)x+7 seja decrescente



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    F(x) = ax + b
    a = 2 — 5m
    b = 7
    Para a funo ser decrescente a deve ser menor que zero.

    2 — 5m < 0
    -5m < -2 (sinal de menos no primeiro e segundo membro devo trocar o sinal de < para > e tirar o sinal de menos)
    5m > 2
    m > 2/5

  • Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
    Para que seja decrescente a < 0
    2 — 5m < 0
    — 5m < -2(-1)
    5m > 2
    m > 2
    5


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39 + = 49