Question

10£®¼×Æï×ÔÐгµ¡¢ÒÒÆïĦÍгµÑØÏàͬ·ÏßÓÉAµØµ½BµØ£¬ÐÐÊ»¹ý³ÌÖз³ÌÓëʱ¼äµÄº¯Êý¹ØϵµÄͼÏóÈçͼ£®ÇëÄã¸ù¾ÝͼÏó½â¾öÏÂÁÐÎÊÌ⣺
£¨1£©Ë­Ïȳö·¢£¿Ïȳö·¢¶àÉÙʱ¼ä£¿Ë­Ïȵ½´ïÖյ㣿Ïȵ½¶àÉÙʱ¼ä£¿
£¨2£©·Ö±ðÇó³ö¼×¡¢ÒÒÁ½È˵ÄÐÐÊ»Ëٶȣ»
£¨3£©ÔÚʲôʱ¼ä¶ÎÄÚ£¬Á½È˾ùÐÐÊ»ÔÚ;ÖУ¨²»°üÀ¨ÆðµãºÍÖյ㣩£¿ÇëÄã¸ù¾ÝͼÖеÄÇéÐΣ¬·Ö±ðÇó³ö¹ØÓÚÐÐʻʱ¼äxÓëÐгÌyÖ®¼äµÄº¯Êý¹Øϵʽ£¬¸ù¾ÝͼÏó»Ø´ð£º¢Ù¼×ÔÚÒÒµÄÇ°Ã棻¢ÚÁ½ÈËÏàÓö£»¢Û¼×ÔÚÒÒºóÃ森

Answer 1

·ÖÎö £¨1£©¸ù¾Ýº¯ÊýͼÏó½â´ð¼´¿É£»
£¨2£©¸ù¾ÝËÙ¶È=×Ü·³Ì¡Â×Üʱ¼ä£¬ÁÐʽ¼ÆËã¼´¿ÉµÃ½â£»
£¨3£©¸ù¾Ýº¯ÊýͼÏó½â´ð¼´¿É£¬ÀûÓôý¶¨ÏµÊý·¨ÇóÒ»´Îº¯Êý½âÎöʽ·Ö±ðÇó½â¼´¿É£®

½â´ð ½â£º£¨1£©¼×Ïȳö·¢£¬Ïȳö·¢10·ÖÖÓ£®ÒÒÏȵ½´ïÖյ㣬Ïȵ½´ï5·ÖÖÓ£»

£¨2£©¼×µÄËÙ¶ÈΪ£ºy_¼×=$\frac{6}{0.5}$=12£¨Ç§Ã×/Сʱ£©£¬
ÒÒµÄËÙ¶ÈΪ£ºy=$\frac{6}{\frac{15}{60}}$=24£¨Ç§Ã×/ʱ£©£»

£¨3£©ÓÉͼÏó¿ÉµÃ£º10£¼x£¼25ʱ£¬Á½È˾ùÐÐÊ»ÔÚ;ÖУ¨²»°üÀ¨ÆðµãºÍÖյ㣩£®
Éèy_¼×=kx£¬
¡ßy_¼×=kx¾­¹ý£¬£¨30£¬6£©£¬
¡à30k=6£¬
½âµÃk=$\frac{1}{5}$£¬
ËùÒÔ£¬y_¼×=$\frac{1}{5}$x£»
Éèy_ÒÒ=k₁x+b£¬
¡ßy_ÒÒ=k₁x+b¾­¹ý£¨10£¬0£©£¬£¨25£¬6£©£¬
¡à$\left\{\begin{array}{l}{10{k}_{1}+b=0}\\{25{k}_{1}+b=6}\end{array}\right.$£¬
½âµÃ$\left\{\begin{array}{l}{{k}_{1}=\frac{2}{5}}\\{b=-4}\end{array}\right.$£¬
ËùÒÔy_ÒÒ=$\frac{2}{5}$x-4£®
¢Ù0£¼x£¼20¼×ÔÚÒÒµÄÇ°Ã棻
¢Úx=20¼×ÓëÒÒÏàÓö£»
¢Ûx£¾20¼×ÔÚÒÒºóÃ森

µãÆÀ ±¾Ì⿼²éÁËÒ»´Îº¯ÊýµÄÓ¦Óã¬Ö÷ÒªÀûÓÃÁË´ý¶¨ÏµÊý·¨ÇóÒ»´Îº¯Êý½âÎöʽÒÔ¼°Ê¶±ðº¯ÊýͼÏóµÄÄÜÁ¦£®