Cho đường thẳng $d$ vuông góc với đường thẳng $d\text{'}:x-5y+1=0$ . Phương trình tổng quát của đường thẳng $d$ có dạng là

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Một số câu hỏi khác có thể bạn quan tâm.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Elisa said to her friend that she was going to the countryside next week.

• Find a mistake in the four underlined parts of the sentence and correct it:

  He asked me if they understood what I had said to them.

• Choose one sentence that has the same meaning as the root one:

  “Why don’t you invite Mary to your birthday party, Jane?” said Tom.
  
  

• Choose one sentence that has the same meaning as the root one:

  “Don’t forget to give me a ring at 10 o’clock tonight,” said Trung.
  
  

• Choose one sentence that has the same meaning as the root one:

  “What shall I do if the car won’t start?” she said.
  
  

• Choose one sentence that has the same meaning as the root one:

  Mark invited Sam to the cinema.
  
  

• Choose one sentence that has the same meaning as the root one:

  “Please don’t smoke in these seats,” the waitress said to tne passengers.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  secondary                      end                       system                        level

• Choose the word that has the underlined part pronounced differently from the rest:

  break                       meaning                         least                        reading

• Choose the word that has the underlined part pronounced differently from the rest:

  option                   question                        production                      tuition