KIỂM TRA 1 TIẾT CHƯƠNG 3 ĐẠI SỐ CÓ ĐÁP ÁN

Chia sẻ bởi Lê Thị Yến | Ngày 26/04/2019 | 49

Chia sẻ tài liệu: KIỂM TRA 1 TIẾT CHƯƠNG 3 ĐẠI SỐ CÓ ĐÁP ÁN thuộc Đại số 9

Nội dung tài liệu:

Họ và tên: ……………………………………............
Lớp : ……………………………..
KIỂM TRA 1 TIẾT CHƯƠNG III. ĐS 9
MÔN: TOÁN

Điểm

I. Trắc nghiệm: Hãy khoanh tròn vào câu trả lời đúng nhất
Câu 1:Trong các phương trình sau, phương trình nào là phương trình bậc nhất hai ẩn:
A. 
B. 

C. 
D. 

Câu 2: Cặp số nào sau đây là một nghiệm của phương trình ?
A. 
B. 
C. 
D. 

Câu 3: Cặp số nào sau đây là nghiệm của hệ PT 
A. (2; 1) B. (-2; -1) C. (2; -1) D (3; 1)

Câu 4: 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

II. Tự luận:
Bài 1: (3 điểm). Giải hệ phương trình
a. b. 
Bài 2. (3,5 điểm). Một cửa hàng có tổng cộng 28 chiếc Ti vi và Tủ lạnh. Giá mỗi cái Tủ lạnh là 15 triệu đồng, mỗi cái Ti vi là 30 triệu nếu bán hết 28 cái Tivi và Tủ lạnh này chủ cửa hàng sẽ thu được 720 triệu. Hỏi mỗi loại có bao nhiêu cái ?
Bài 3: (1,5 điểm)Cho hệ phương trình
Tìm m để hệ phương trình trên có nghiệm duy nhất, vô số nghiệm
Tìm m để hệ phương trình trên có nghiệm x < 0, y > 0
BÀI LÀM
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Họ và tên: ……………………………………............
Lớp
KIỂM TRA 1 TIẾT CHƯƠNG III. ĐS 9
MÔN: TOÁN

Điểm

Đề2
I. Trắc nghiệm: Hãy khoanh tròn vào câu trả lời đúng nhất
Câu 1: Cặp số nào sau đây là nghiệm của hệ PT 
A. (2; 1) B. (-2; -1) C. (2; -1) D (3; 1)
Câu 2:Trong các phương trình sau, phương trình nào là phương trình bậc nhất hai ẩn:
A. 
B. 

C. 
D. 

Câu 3: Cặp số nào sau đây là một nghiệm của phương trình ?
A. 
B. 
C. 
D. 

Câu 4: 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

II. Tự luận:
Bài 1: (3 điểm). Giải hệ phương trình
a. b. 
Bài 2: Một cửa hàng có 28 chiếc xe máy gồm Ware α và SH giá mỗi chiếc Wave α là 15 triệu đồng, mỗi chiếc SH là 117 triệu nếu bán hết 28 chiếc xe máy này chủ cửa hàng sẽ thu được 828 triệu. Hỏi mỗi loại có bao nhiêu chiếc ?
Bài 3: Cho hệ phương trình
Tìm m để hệ phương trình trên có nghiệm duy nhất, vô số nghiệm
Tìm m để hệ phương trình trên có nghiệm x < 0, y > 0
BÀI LÀM
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