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一次函数是初中的重要内容之一,其解法及应用都较为多样.下面就一些创新性试题剖析如下,供同学们学习时参考.一开放性题例1“一根弹簧原长10 cm,在弹性限度内最多可挂质量为5kg的物体,挂上物体后弹簧伸长的长度与所挂物体的质量成正比,____,则弹簧的总长度y(cm)与所挂物体质量x(kg)之间的函数关系式是y=10+0.5x(0≤x≤5).”王刚同学在阅读上面材料时,发现部分内容被墨水污染.被污染部分是确定函数关系式的一个条件.你认为该条件可以是:____
A function is one of the important content of junior high school, its solution and application are more diverse.The following is a brief analysis of some innovative questions as follows, for students to learn reference.An open case 1 “a spring original length of 10 cm, Within the elastic limit of up to 5kg mass hanging objects hanging after the object length of the spring elongation is proportional to the mass of the object hanging ____, then the total length of the spring y (cm) and the mass of the object x (kg ) Is a function of the relationship between y = 10 +0.5 x (0 ≤ x ≤ 5). ”Wang Gang students read the above material, it was found that part of the content of the ink pollution. Pollution is part of the function to determine a condition You think this condition can be: ____