
ÔN TẬP TOÁN 9
Authored by dao xuan
Mathematics
9th Grade
Used 65+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Câu 1. Hàm số y = ax2 (a ≠ 0) xác định với
A. mọi giá trị x ∈ ℝ.
B. mọi giá trị x ∈ ℤ.
C. mọi giá trị x ∈ ℕ.
D. mọi giá trị x ∈ ℕ*.
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
A. (–1; –3).
B. (4; 12).
C. (–2; –6).
D. (1; 3).
3.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
A. Đồ thị hàm số nhận trục tung làm trục đối xứng.
B. Với a < 0 thì đồ thị nằm phía dưới trục hoành và O(0; 0) là điểm cao nhất của đồ thị.
C. Với a > 0 thì đồ thị nằm phía trên trục hoành và O(0; 0) là điểm cao nhất của đồ thị.
D. Với a > 0 thì đồ thị nằm phía trên trục hoành và O(0; 0) là điểm thấp nhất của đồ thị.
4.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
A. 3x2 – 3x + 2 = 0.
B. 2x3 – 2022 = 0.
C. 4x−5=0.
D. 5x – 1 = 0.
5.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
A. x2 – 4x – 2 = 0 trong đó a = 1; b = –4; c = –3.
B. 4x2 – 2x + 1 = 0 trong đó a = 4; b = –2; c = 1.
C. x2 – 4x – 5 = 0 trong đó a = 1; b = –4; c = -5.
D. 5x2 – m – 1 = 0 trong đó a = 5; b = 0; c = –m – 1.
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