IB MAI HL Functions Topic 2.2 Applications of Functions (id: 4eef6101e)

本题目来源于试卷: IB MAI HL Functions Topic 2.2 Applications of Functions，类别为 IB数学

[填空题]
The dietary reference intake (DRI,l*.le4rne ;ehmxv9u . in grams), y, of protein for a *s; skjy qq*0hsedentary male a*;0 h*yqksqjsdult of mass x kg is determined by the equation y=mx+c, where m and c are constants.
For a male adult of mass 60 kg the DRI of protein is 6969 grams, and for a male adult of mass 90 kg the DRI of protein is 91.5 grams.
1.Determine the value of m and the value of c.
2.Find the DRI of protein for a male adult of mass 70 kg. y =    grams
3.Suggest a reason why the equation may not be appropriate for determining the DRI of protein for a male child of mass 40 kg.

参考答案: 76.5±2%


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