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Diketahui  Jika daerah hasil grafik fungsi   adala...

Diketahui begin mathsize 14px style f colon x rightwards arrow 5 minus 2 x. end style Jika daerah hasil grafik fungsi undefined  adalah begin mathsize 14px style left curly bracket y space left enclose negative 7 less than y less or equal than 9 comma y element of straight R end enclose right curly bracket end style, daerah asal grafik fungsi begin mathsize 14px style y equals f left parenthesis x right parenthesis end style adalah ....vv

  1. begin mathsize 14px style open curly brackets x space left enclose negative 4 less or equal than x less than 12 comma space x element of text R end text end enclose close curly brackets end style 

  2. begin mathsize 14px style open curly brackets x space left enclose negative 4 less than x less or equal than 12 comma space x element of text R end text end enclose close curly brackets end style 

  3. begin mathsize 14px style open curly brackets x space left enclose negative 2 less or equal than x less than 12 comma space x element of text R end text end enclose close curly brackets end style 

  4. begin mathsize 14px style open curly brackets x space left enclose negative 2 less than x less or equal than 6 comma space x element of text R end text end enclose close curly brackets end style 

  5. begin mathsize 14px style open curly brackets x space left enclose negative 2 less or equal than x less than 6 comma space x element of text R end text end enclose close curly brackets end style 

Jawaban:

Jika begin mathsize 14px style y equals negative 7 end style, maka:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row y equals cell 5 minus 2 x end cell row cell negative 7 end cell equals cell 5 minus 2 x end cell row cell 2 x end cell equals 12 row x equals 6 end table end style

Jika begin mathsize 14px style y equals 9 end style, maka:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row y equals cell 5 minus 2 x end cell row 9 equals cell 5 minus 2 x end cell row cell 2 x end cell equals cell negative 4 end cell row x equals cell negative 2 end cell end table end style 

Sehingga, daerah asalnya begin mathsize 14px style open curly brackets x vertical line minus 2 less or equal than x less than 6 comma x element of straight real numbers close curly brackets end style.

Jadi, jawaban yang tepat adalah E.

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