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Pertanyaan

Bayangan garis 2x-7-6 = 0 jika dicerminkan terhadap sumbu X dilanjutkan rotasi pusat O sejauh 90 adalah ..........

  1. 2x + y - 6 = 0

  2. x + 2y - 6 = 0

  3. x - 2y - 6 = 0

  4. x + 2y + 6 = 0

  5. x - 2y + 6 = 0

R. RGFLSATU

Master Teacher

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Pembahasan

P e n c e r m i n a n space t e r h a d a p space s u m b u space x space colon space M subscript x space equals open square brackets table row 1 0 row 0 cell negative 1 end cell end table close square brackets  R o t a s i space p u s a t space 0 comma space alpha space equals space 90 degree space colon space R alpha equals space open square brackets table row 1 0 row 0 cell negative 1 end cell end table close square brackets  S e t i a p space t i t i k space left parenthesis x comma y right parenthesis space d i c e r m i n k a n comma space k e m u d i a n space d i r o t a s i k a n space s e h i n g g a space a k a n space m e m i l i k i space b a y a n g a n colon  open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses equals space R subscript open parentheses 0 comma 90 to the power of o close parentheses end subscript space. space M subscript x open parentheses table row x row y end table close parentheses  space space space space space space space space space equals space open square brackets table row 0 cell negative 1 end cell row 1 0 end table close square brackets space open square brackets table row 1 0 row 0 cell negative 1 end cell end table close square brackets open parentheses table row x row y end table close parentheses  space space space space space space space space space equals space open square brackets table row 0 cell negative 1 end cell row 1 0 end table close square brackets open parentheses table row x row cell negative y end cell end table close parentheses equals open parentheses table row y row x end table close parentheses  x apostrophe space equals space y space d a space n space y apostrophe space equals space x  B e r a r t i comma space b a y a n g a n space g a r i s space 2 x space minus space y space minus 6 space equals space 0 space a d a l a h colon  space 2 space left parenthesis y right parenthesis space minus space left parenthesis space x right parenthesis space minus space 6 space equals space 0 space  x space minus space 2 y space plus space 6 space equals space 0

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