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Pertanyaan

fungsi h didefinisikan dengan rumus h(x)=ax+b. jika h(5)=-8 dan h(-2) =13, nilai h(3) adalah ...

  1. 14

  2. 2

  3. -2

  4. -14

I. Sutiawan

Master Teacher

Mahasiswa/Alumni Universitas Pasundan

Jawaban terverifikasi

Pembahasan

h left parenthesis x right parenthesis space equals space a x space plus space b  space space h left parenthesis 5 right parenthesis space equals space 5 a space plus space b space space  5 a space plus space b space equals space minus 8 space horizontal ellipsis. left parenthesis 1 right parenthesis space space  space h left parenthesis negative 2 right parenthesis space equals space minus 2 a space plus space b space space  minus 2 a space plus space b space equals space 13 horizontal ellipsis left parenthesis 2 right parenthesis space space  E l i m i n a s i space p e r s a m a a n space left parenthesis 1 right parenthesis space t e r h a d a p space left parenthesis 2 right parenthesis space space  5 a space plus space b space equals space minus 8  bottom enclose negative 2 a plus b equals 13 end enclose space minus  7 a equals negative 21  a equals negative 21 over 7  a equals negative 3  5 a space plus space b space equals space minus 8 space space  5 left parenthesis negative 3 right parenthesis space plus space b space equals space minus 8 space space  minus 15 space plus space b space equals space minus 8 space space  b space equals space minus 8 space plus space 15 space  space b space equals space 7 space  space D i p e r o l e h space space  h space left parenthesis x right parenthesis space equals space minus 3 x space plus space 7 space  space h space left parenthesis 3 right parenthesis space equals space minus 3 left parenthesis 3 right parenthesis space plus space 7 space space  equals space minus 9 space plus space 7 space space equals space minus 2

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Pertanyaan serupa

Diketahui f(x) adalah ax+b. Jika f(−3)=−16 dan f(4)=−2. Tentukan rumus fungsi .

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Jawaban terverifikasi

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