

反比引導
Presentation
•
Mathematics
•
6th - 8th Grade
•
Practice Problem
•
Easy
Fan-Hsuan Lin
Used 1+ times
FREE Resource
0 Slides • 6 Questions
1
Multiple Select
我們知道「若y和x成正比代表y和x的比值固定,也就是 xy=k 」。反比的其實也有類似的意涵,只是反比的「反」代表y和「x的相反形型態」比值固定,請問x的相反型態是甚麼?(可複選)
x的相反數,也就是-x
x的倒數,也就是 x1
原本是 y÷x=k ,所以相反型態應該就是 y×x=k
以上皆非
2
Draw
若x和y成反比,且當x=10時,y=5;
則請問當x和y的關係式為何?
3
Draw
若x和y成反比,且當x=10時,y=5;
則請問當x=2時,y值為多少?
4
Draw
若x和y成反比,且當x=10時,y=5;
則請問當y=20時,x值為多少?
5
Draw
若x和y成反比,且當x=10時,y=5;
則請問當y=3時,x值為多少?
6
Draw
若(x+2)和y成反比,且當x=10時,y=5;
則請問當y=3時,x值為多少?
我們知道「若y和x成正比代表y和x的比值固定,也就是 xy=k 」。反比的其實也有類似的意涵,只是反比的「反」代表y和「x的相反形型態」比值固定,請問x的相反型態是甚麼?(可複選)
x的相反數,也就是-x
x的倒數,也就是 x1
原本是 y÷x=k ,所以相反型態應該就是 y×x=k
以上皆非
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