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Pertanyaan

F u n g s i f d i n y a t a k a n space d e n g a n space r u m u s space f left parenthesis x right parenthesis space equals space a x space plus space b. space J i k a space f left parenthesis negative 5 right parenthesis space equals space 15 space d a n space f left parenthesis 5 right parenthesis space equals space long dash 5 comma space n i l a i space d a r i space f left parenthesis 1 right parenthesis  a d a l a h space...

 

  1. —2

  2. 5

  3. 3

  4. 7

F. Kurnia

Master Teacher

Mahasiswa/Alumni Universitas Jember

Jawaban terverifikasi

Pembahasan

f left parenthesis x right parenthesis equals a x plus b space  f left parenthesis negative 5 right parenthesis equals space minus 5 a plus b equals 15 space space space  bottom enclose f left parenthesis 5 right parenthesis equals 5 a plus b equals space minus 5 space space space space space space space space space space space space minus end enclose space  minus 10 a equals 20 space  a equals space minus 20 over 10 equals space minus 2 space    minus 5 a plus b equals 15 space  minus 5 left parenthesis negative 2 right parenthesis plus b equals 15 space  10 plus b equals 15 space  b equals 15 minus 10 space  b equals 5 space  S e h i n g g a space f left parenthesis x right parenthesis equals space minus 2 x plus 5 space  f left parenthesis 1 right parenthesis equals space minus 2 space left parenthesis 1 right parenthesis plus 5 space  equals space minus 2 plus 5 space space  equals 3

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