配套习题- 认识二元一次方程（组） -【青果学院】

1/5单选题

难度：

1.下列四个方程中，是二元一次方程的是( )

A	x-3=0
B	2x-y=5
C	3xy-5=8
D	+y=

正确答案：Qg==

Qe+8jumUmeivr++8jOWPquWQq+acieS4gOS4quacquefpeaVsO+8m0Iu5q2j56Gu77ybQy7plJnor6/vvIzmrKHmlbDkuLoy5qyh77ybRC7plJnor6/vvIzliIblvI/mlrnnqIvjgILmlYXpgIlC

2/5单选题

难度：

2.下列方程组中，是二元一次方程组的是( )

A
B
C
D

正确答案：Qg==

Qe+8jumUmeivr++8jOWQq+acieS4ieS4quacquefpeaVsO+8m0Iu5q2j56Gu77ybQy7plJnor6/vvIzmrKHmlbDkuLoy5qyh77ybRC7plJnor6/vvIzliIblvI/mlrnnqIvnu4TjgILmlYXpgIlCPGJyPg==

3/5单选题

难度：

3.下列方程组中( )的解是

A
B
C
D

正确答案：Qw==

5oqKPGltZyB3aWR0aD0xMzUgaGVpZ2h0PTU1IHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0YvM0IvckJBQ0oxVEprWmlTZ2djUEFBQURoODRNOEZFODQ2LnBuZyI+5Luj5YWl5Zub5Liq6YCJ6aG555qE5LqM5YWD5LiA5qyh5pa556iL57uE5Lit77yM5Y+q5pyJQ+mhueaIkOeri+OAguaVhemAiUM=

4/5单选题

难度：

4.已知

是方程ax-2y=2的一个解，则a=____.

A	2
B	4
C	5
D	7

正确答案：Qg==

5oqKPGltZyB3aWR0aD03NyBoZWlnaHQ9NjAgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BQS9BRC9yQkFDRkZUSmtaLXlNOWY4QUFBRGhWbjk0am83NzkucG5nIj7ku6PlhaXmlrnnqItheC0yeT0y77yM5b6XPGltZyB3aWR0aD05NyBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BQS9BRC9yQkFDRkZUSmtaX1RRcXFZQUFBQ0EwMTRMWm83MDMucG5nIj4s6Kej5b6X77yaYT00

5/5单选题

难度：

5.

若x^3m−3−2yⁿ⁻¹=5 是关于x、y的二元一次方程，则m=____，n=____.

A	43 ,2
B	2,2
C	3,4
D	5,2

正确答案：QQ==

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