2/2 二元一次式

2/2 二元一次式

6th - 8th Grade

20 Qs

quiz-placeholder

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2/2 二元一次式

2/2 二元一次式

Assessment

Quiz

Mathematics

6th - 8th Grade

Practice Problem

Medium

Created by

孟修 謝

Used 1+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 3 pts

下列何者是二元一次式?

x+y=1
x+2x+1
x+2y
x2+x+1

2.

MULTIPLE SELECT QUESTION

20 sec • 3 pts

下列哪些為二元一次方程式?

2y+x-32=1

x=4y-1

x+y=x+2

x+y

3.

MULTIPLE SELECT QUESTION

2 mins • 5 pts

下列關於二元一次方程式10x+15y=70的敘述,哪些正確?

有無限多組解

x=-1時,y=6

x=8.5時,y=-1

x , y的正整數解有兩組

4.

MULTIPLE CHOICE QUESTION

2 mins • 5 pts

x=7,y=-1是xky=15的解,則k=?

-3

-4

3

8

5.

MULTIPLE CHOICE QUESTION

2 mins • 8 pts

若3x+5y=80,則0.3x+0.5y+92=?

8

21

100

120

6.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

(-2x-3y-4)-3(-3xy-8)=?

7x-4y+20

7x-6y+20

-5x-6y+20

-5x-4y+20

7.

MULTIPLE CHOICE QUESTION

2 mins • 6 pts

x=3 , y=-1是二元一次方程式ax+by=5的解,則-9a+3b-7=?

2

8

-2

-22

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