Page 40 - E-LKPD BERBASIS HOTS
P. 40

2.  Tentukan selesaikan dari sistem persamaan linear berikut dengan menggunakan grafik.
               a.     = 2    +  9 dan    = 6 −   
                                          3
               b.     = −   − 4 dan    =    + 4
                                          5
                                     1
               c.     = 2   + 5 dan     − 1
                                     2


                           PENYELESAIAN


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               3.  Biaya untuk merawat serta perbaikan kuda dan kereta dinyatakan dalam persamaan     =
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                     15.000   + 2.000.000 dimana    adalah banyaknya berkeliling. Jika ongkos untuk satu
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                    kali naik berkeliling kota adalah Rp35.000,00. Tentukan:
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                           .
                     a.  Persamaan pendapatan yang diperoleh pemilik kereta kuda.

                     b.  Berapa kali kereta untuk berkeliling kota supaya memperoleh break-even-point?


                     c.  Berapa kali kereta untuk berkeliling kota supaya memperoleh break-even-point jika

                         ongkos untuk satu kali naik berkeliling kota adalah  Rp50.000,00?





               E-LKPD Berbasis HOTS  Kelas VIII SMP/ MTs                                                30
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