
Kiểm tra Chương 2: Bất phương trình và hệ bất phương
Quiz
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
Nhật Minh
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60 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bất phương trình nào sau đây là bất phương trình bậc nhất hai ẩn?
0x – 0y ≤ 5
x + 3y2 ≥ 0
–22x + y ≤ 4
x2 < 3x – 7y
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bất phương trình nào tương đương với bất phương trình 3x – y > 7(x – 4y) + 1?
4x – 27y + 1 ≥ 0
4x – 27y + 1 > 0
4x – 27y + 1 ≤ 0
4x – 27y + 1 < –1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bất phương trình nào sau đây luôn có vô số nghiệm?
x + y < 2
x + y > 2
x + y = 2
x + y ≤ 2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hệ bất phương trình nào mô tả các ràng buộc đối với x, y?
x ≥ 0, y ≥ 0, x + y ≤ 900
x ≥ 0, y ≥ 0, 2x + y ≤ 18
x ≥ 0, y ≥ 0, x + 2y ≤ 18
x ≥ 0, y ≥ 0, x + y < 900
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bất phương trình nào có nghiệm là (0; 1)?
x – y > 1
x + y ≤ 2
x – y < 0
x + y < 2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điểm nào trong các điểm sau thuộc miền nghiệm của bất phương trình: –3x + y > 0?
(–3; 0)
(1; 1)
(0; 0)
(3; 2)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cặp số nào sau đây không là nghiệm của bất phương trình: x – 4y ≥ –5?
(–5; 0)
(0; 0)
(1; –3)
(–2; 1)
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