
國中數學一下3-2
Authored by 康軒 國中
Education
7th Grade
Used 9+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知k為定數且k≠0,若y與x成正比,則x與y的關係式可簡記為下列何者?
xy=k
x-y=k
x+y=k
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若xy=k,k為定數且k≠0,則x與y的關係為下列何者?_x000B_
y與x成正比
y與x成反比
x與y成正比,也成反比
x與y不成正比,也不成反比
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知y與x成正比,且當x=3時,y=9,則下列何者正確?_x000B_
當x=-3時,y=-1
當x=-2時,y=-6
當x=1時,y=27
當x=6時,y=2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一個式子表示y與x成反比?_x000B_
3x+7y=21
3x+7y=0
y=3x+7
3xy+7=0
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者不能表示y與x成反比?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
面積為40平方公分的長方形,它的長為x公分、寬為y公分。則可列成關係式為何?_x000B_
y=40+x
y=40-x
xy=40
y=40x
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
設圓的半徑為x,圓周長為y,則x與y的關係式為何?
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