论文部分内容阅读
客运公司规定旅客可随身携带一定重量的行李,如果超出规定,则需购买行李票费,行李票用y(元)是行李重量x(千克)的一次函数,如图．
The passenger transport company stipulates that passengers can carry a certain amount of baggage with them. If they exceed the regulations, they must purchase the baggage ticket fee. The baggage ticket with y (yuan) is a function of baggage weight x (kg), as shown in the figure.