toán 9
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Standards-aligned
Minh Thanh
Used 1K+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
cho hai đường thẳng d: y = 2x +7 và d': y = ax + 5. Ta có d // d' khi d' có phương trình là
y = 3x +5
y= 5x +5
y= -2x +5
y = 2x +5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình 4x - 3y = -1 nhận cặp số nào sau đây là nghiệm:
(1;-1)
(-1;-1)
(1;1)
(-1;1)
3.
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.
2
1
-2
0
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Với giá trị nào của a thì hệ hai phương trình
y = ax+5 và y + 2 = 0 vô nghiệm
0
1
2
3
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Phương trình nào sau đây là phương trình bậc nhât hai ẩn
xy +x = 3
2x - y = 0
x+3=0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Có 10 người bước vào phòng họp. Tất cả đều bất tay lẫn nhau. Số cái bắt tay sẽ là:
89
45
90
54
Tags
CCSS.HSS.CP.B.9
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Đường thẳng y=0,5x-2 đi qua điểm có tọa độ:
(0;1)
(-2;0)
(4;2)
(2;-1)
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