Matematika

Pertanyaan

Diketahui Suatu Fungsi dengan rumus f(x) = ax + b . Jika f(2) = 3 dan f(-1) = -6 maka nilai a dan b adalah?

1 Jawaban

  • Chapter Function
    Mathematics
    Class 8 SMP


    "Looking for a and b values in function form"
    "Elimination Method - Substitution"


    Settlement

    f (x) = ax + b
    f (2)  ⇒  2a + b = 3
    f (-1) ⇒ -1a + b = -6
                 --------------- -
                        3a = 9
                          a = 3

        2a + b = 3
    2 (3) + b = 3
                b = 3 - 6
                b = -3
                          

    Function Shape

    f (x) = ax + b

    f (x) = 3x + -3


    I hope this helps!!!

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