问题
填空题
等腰三角形的周长为16cm，底边长为ycm，腰长为xcm，则y与x之间的关系式为（ ），自变量x的取值范围为（ ）。
答案
y=16-2x ；3＜x＜6
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等腰三角形的周长为16cm，底边长为ycm，腰长为xcm，则y与x之间的关系式为（ ），自变量x的取值范围为（ ）。
y=16-2x ；3＜x＜6
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