
Giải hệ phương trình

Quiz
•
Mathematics
•
9th Grade
•
Medium
Phương Phạm
Used 4+ times
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40 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Giải hệ phương trình sau:
x-y=2
2x+y=1
x=1, y=-1
x=-1, y=1
x=1, y=1
x=-1, y=-1
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Giải hệ phương trình sau:
2(x-2y)+3(x+2y)=4
(x-y)+2(x+y)=1
x=6/11, y=7/11
x=11/6, y=11/7
x=6/11, y= 11/7
x=11/6, y=7/11
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Giải hệ phương trình sau:
x+1-y=2x+y
3x+y=x-y+2
x=1, y=0
x=0, y=1
x=1, y=1
x=0, y=0
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Giải hệ phương trình sau:
(x+1)(y+1)=(x-3)(y+3)
(x+1)(2y-1)=(2x-1)(y+1)
x=-5, y=-5
x=5, y=5
x=-5, y=5
x=5, y=-5
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Cho hệ phương trình:
2ax-by=3
bx-ay=-5
Xác định các hệ số a và b, biết:
Hệ có nghiệm (x,y)=(1,2)
a=7/2, b=2
a=2, b=7/2
a=2/7, b=1/2
a=1/2, b=2/7
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Tìm giá trị của a và b để hai đường thẳng
(d1): ax + (b − 1)y = 4
(d2): 2bx − ay = 5
cắt nhau tại điểm M(1; 3).
a=-1/11, b=26/11
a=26/11, b=-1/11
a=-11, b= 11/26
a=11/26, b=-11
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Tìm giá trị của m để đường thẳng (d): (2m − 1)x + y = 5m đi qua giao điểm của hai đường thẳng (d1): 2x + y = 3 và (d2): 3x − 2y = 1.
m=0
m=1
m=-1
m=2
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