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Diketahui : f(x) = mx + n. Jika f(-1) = 2 dan f(2) = 11 , nilai f(4) adalah ...

Pertanyaan

Diketahui : f(x) = mx + n.
Jika f(-1) = 2 dan f(2) = 11 , nilai f(4) adalah ...

  1. 17

  2. 28

  3. 37

  4. 60

R. Azizatul

Master Teacher

Mahasiswa/Alumni Universitas Negeri Yogyakarta

Jawaban terverifikasi

Pembahasan

f left parenthesis x right parenthesis space equals space m x space plus space n  space f left parenthesis negative 1 right parenthesis equals space m left parenthesis negative 1 right parenthesis space plus space n space space rightwards arrow space 2 space equals space minus m space plus space n space space  space f left parenthesis 2 right parenthesis equals space m left parenthesis 2 right parenthesis space plus space n space space space rightwards arrow space space space space space space space 11 equals space 2 m space plus space n space space minus space space  space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space stack space space minus 9 equals space minus 3 m space space space space space space space space space with bar on top  space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space m space equals space 3 space  minus m plus n equals 2 space  n equals m plus 2 space  n equals 3 plus 2 space  n equals 5 space    S e h i n g g a comma space  f left parenthesis x right parenthesis space equals space 3 x space plus space 5 space  f left parenthesis 4 right parenthesis space equals space 3 left parenthesis 4 right parenthesis space plus space 5 space equals space 17

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