正比與反比

正比與反比

7th Grade

30 Qs

quiz-placeholder

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正比與反比

正比與反比

Assessment

Quiz

Mathematics

7th Grade

Medium

Created by

Vincent Tuan

Used 2+ times

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30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

正比

反比

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

已知兩變數x、y滿足4x+3y=0,則x和y的關係為何?

正比

反比

3.

MULTIPLE SELECT QUESTION

1 min • 1 pt

已知x和y滿足y=3x,下列敘述何者正確?(應選2項)

x和y都是變數

x和y成反比

x和y成正比

x的值是y值的3倍

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列哪一個式子代表「x和y成正比」?

y=7x+2

-5xy=3

7x=2y

y=20

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列xy的關係式中,何者的xy成反比?

y=21x

yx-11

4x=3y

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列何者可以表示yx成正比?

y=2x-1

x=3y+1

4x=3y

7.

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?

y=40+x

y=40-x

xy=40

y=40x

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