
Toán Gki 9
Authored by Pupu Chacha
Mathematics
9th Grade
Used 1+ times

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34 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình nào sau đây là phương trình bậc nhất hai ẩn?
A. 3x² + 2y = -1
B. 3x + y = -1
C. 3x - 2y - z = 0
D. 1/x + y = 3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình bậc nhất hai ẩn ax + by = c có bao nhiêu nghiệm?
A. Hai nghiệm
B. Một Nghiệm Duy Nhất
C. Vô Nghiệm
D. Vô Số Nghiệm
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hệ phương trình {2x - 3y = 5 vô nghiệm khi
{4x + my = 2
A. m = -6
B. m = 1
C. m = -1
D. m = 64
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Với giá trị nào của K thì phương trình
x - ky = -1 nhận cặp số (1;2) làm nghiệm
A. k = 2
B. k = 1
C. k = -1
D. k = 0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Với giá trị nào của a , b thì phương trình
{ax + 2y = 3
{x + by = -3
A. a = 1 ; b = -1
B. a = 0 ; b = 4
C. a = 2 ; b = 2
D. a = -2 ; b = -2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình đường thẳng đi qua hai điểm A (1;-1) và B (-2;-7) là
A. y= 2x + 3
B. y = -2x - 1
C. y = -2x + 1
D. y = 2x - 3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cặp số (1;-2) là một nghiệm của phương trình nào sau đây?
A. 2x - y = 0
B. 2x + y = 1
C. x - 2y = 5
D. x - 2y = -3
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