1下 1-1 二元一次方程式

Quiz
•
Mathematics
•
7th Grade
•
Hard
康軒數位 康軒數位
Used 56+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4
-1
-4
-3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
x=2,y=-1是下列哪一個二元一次方程式的解?
3x-2y=4
2x+y=-5
y=3x-8
2x-y=5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一組數對不是3x-y+2=0的解?
(0 , 2)
(-1 , 1)
(2 , 8)
(1 , 5)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
阿輝在社區的垃圾箱中整理出x公斤的廢紙和y公斤的鋁罐,已知廢紙每公斤回收價2元,鋁罐每公斤回收價6元,請問阿輝總共整理出價值多少元的回收資源?
x+y
2x+6y
6x - 12y
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
小玉的撲滿中有50元硬幣x個,10元硬幣y個,則下列何者錯誤?
撲滿中50元硬幣共值50x元
硬幣共有(x+y)個
撲滿中10元硬幣共值10y元
撲滿中共有(10x+50y)元
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者為二元一次方程式?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
柯南原有500元,如果他在日本料理店買單價為40元的茶碗蒸x碗,又買了單價30元的手捲y個,那麼他剩下多少元
40x+30y
500-40x+30y
500-40x-30y
500-70xy
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