题目

Tom likes playing ___ football, but his sister likes playing __ piano. A . the; / B . /; the C . /; / D . the; the 答案:B画出函数的图象. (1)函数的自变量x的取值范围是________;(2)列表(把表格补充完整)x……-2-101234……y(3)描点、连线(4)结合图象,写出函数的一条性质________________________________________.
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