Ôn tập chương 3 đại số 9
Quiz
•
Mathematics
•
9th Grade
•
Hard
Diễm Trần
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Phương trình nào dưới đây có thể kết hợp với phương trình x - y = 1 để được một hệ phương trình bậc nhất một ẩn có vô số nghiệm?
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
(2;-3)
(2;3)
(0;1)
(-1;1)
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Phương trình nào sau đây là phương trình bậc nhất hai ẩn?
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cho hai đường thẳng d: y = 2x + 5 và d': y = ax + 5. Ta có d // d' khi d' có phương trình là:
y=3x+5
y=5x+5
y=-2x+5
cả 3 ý đều sai
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Phương trình 4x - 3y = -1 nhận cặp số nào sau đây là nghiệm:
(1;-1)
(-1;-1)
(1;1)
(-1;1)
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Với giá trị nào của k thì phương trình x - ky = -1 nhận cặp số (1; 2) làm nghiệm.
k=2
k=1
k=-1
k=0
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