配套习题- 如何判断二元一次方程组解的情况 -【青果学院】

1/5单选题

难度：

1.二元一次方程组

的解的情况是（）

A	无解
B	有无数解
C	唯一解
D	有两个解

正确答案：QQ==

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2/5单选题

难度：

2.关于x、y的方程组

有无数解的条件是（　　）

A	a＝8
B	a＝6
C	a＝4
D	a＝2

正确答案：RA==

PGRpdj48aW1nIHdpZHRoPTgxIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzIzLzY1L3JCQUNFMU1NWFQzeldGN0RBQUFEQzNONjZUMDEyNi5wbmciPjwvZGl2PjxkaXY+5b2TYe+8mjE9NDoyPTEyOjbml7bmnInml6DmlbDop6M8L2Rpdj48ZGl2PuKItGE9MjwvZGl2Pg==

3/5单选题

难度：

3.

a、b为何值时，关于x、y的方程组有无数解（）

A	a=1，b=2
B	a=1，b=4
C	a=2，b=-2
D	a=1，b=-4

正确答案：RA==

PGRpdj7op6PvvJo8aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMjMvNjUvckJBQ0UxTU1YVURpYTBEWEFBQURHbjYtdWFnNzg0LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy82NS9yQkFDRTFNTVhVRGlhMERYQUFBREduNi11YWc3ODQucG5nIiBoZWlnaHQ9IjQyIiB3aWR0aD0iODYiPuW9k2HvvJoyPTLvvJrvvIgtYu+8iT0xMDoyMOaXtuacieaXoOaVsOinozwvZGl2PjxkaXY+5Y2zYT0x77yMYj0tNDwvZGl2Pg==

4/5单选题

难度：

4.

关于x、y的方程组有唯一解，则一定存在（）

A	a≠3，b≠6
B	a≠3，b≠-6
C	a=3，b=-6
D	b≠-6，和a的取值没有关系

正确答案：RA==

PGRpdj7op6PvvJo8aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMDAvNzYvckJBQ0ZGTU1YVVBEOWllQkFBQUMzUjlvX3pvNTM2LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8wMC83Ni9yQkFDRkZNTVhVUEQ5aWVCQUFBQzNSOW9fem81MzYucG5nIiBoZWlnaHQ9IjQyIiB3aWR0aD0iNzgiPjwvZGl2PjxkaXY+5Y+q6ZyAMToy4omg77yILTPvvInvvJpi5Y2z5Y+v77yM5Y2zYuKJoC02PC9kaXY+

5/5单选题

难度：

5.关于x、y的方程组

解的情况判断正确的是（）

A	a：d=b：e=c：f时无解
B	a：d=b：e=c：f时有无数解
C	a：d=b：e≠c：f时唯一解
D	a：d≠b：e=c：f时无解

正确答案：Qg==

PGRpdj7op6PvvJph77yaZD1i77yaZT1j77yaZuaXtuaXoOaVsOinozwvZGl2PjxkaXY+Ye+8mmQ9Yu+8mmXiiaBj77yaZuaXtuaXoOinozwvZGl2PjxkaXY+Ye+8mmTiiaBi77yaZT1j77yaZuaXtuWUr+S4gOinozwvZGl2Pg==