
chapter 10 基础
Authored by changhai li
Specialty
7th Grade
Used 4+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
已知x=-1y=-3是关于x,y的二元一次方程2x﹣ay=4的解,则a的值为( )
﹣1
﹣2
1
2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知x=3,y=-1是方程2x﹣4y=m的解,则m的值是( )
10
﹣2
﹣10
2
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列各式中,为二元一次方程的是( )
4x+3y﹣9=0
2x+y+3z=4
x+4y=6
3x﹣xy+20=0
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列方程组中,是二元一次方程组的是( )
2x+y-xy=1
3x-2y=3
3x=y-1
5x-4z=7
x+2yx=5
5x+y=3
2x+y=7
3x+y=9
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列方程组中,是二元一次方程组的是( )
x+3y=5
2x-3z=3
m+n=5
mn+n=6
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列式子中,是二元一次方程的是( )
x+y=1
2x﹣1=x
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列方程组中是二元一次方程组的是( )
3x+4y=6
5z-6y=4
x+y=2
x-y=4
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