
2/2 二元一次式
Quiz
•
Mathematics
•
6th - 8th Grade
•
Practice Problem
•
Medium
孟修 謝
Used 1+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 3 pts
下列何者是二元一次式?
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
若x=7,y=-1是x-ky=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(-3x+y-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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