KIỂM TRA CHƯƠNG III ĐẠI 9

Chia sẻ bởi Lê Thương Huyền | Ngày 13/10/2018 | 47

Chia sẻ tài liệu: KIỂM TRA CHƯƠNG III ĐẠI 9 thuộc Đại số 9

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KIỂM TRA CHƯƠNG III ĐẠI 9
Họ và tên: ……………………………….. Thời gian: 45 phút
ĐỀ BÀI.
Bài 1 : Giải các hệ phương trình sau : A /  B/ 
Bài 2 : Hai người làm chung một công việc trong 20 ngày thì xong. Nếu người thứ nhất làm 12 ngày, và người thứ hai làn 15 ngày thì chỉ được  công việc đó. Hỏi mỗi người làm riêng thì xong công việc đó trong bao lâu ?
Bài 3 (0,5đ):Cho đường thẳng:2mx-(n-1)y=m (d). Xác định m, n biết (d) đi qua A(2;-1) và B(-1;3)
Bài 4 (0,5đ): Cho hệ  ( với k là số cho trước)
Tìm k để hệ trên có nghiệm duy nhất thoả mãn: x ( 0; y ( 0
BÀI LÀM:
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KIỂM TRA CHƯƠNG III ĐẠI 9
Họ và tên: ……………………………….. Thời gian: 45 phút
Lớp 9A
ĐỀ BÀI.
Bài 1 : Giải các hệ phương trình sau : A /  B/ 
Bài 2: Hai vòi nước cùng chảy vào bể không có nước thì sau 5 giờ đầy bể. Nếu mở vòi thứ nhất chảy trong 6 giờ và vòi thứ hai chảy trong 2 giờ thì được  bể nước. Hỏi nếu mỗi vòi chảy một mình thì sau bao lâu sẽ đầy bể?
Bài 3 (0,5đ): Xác định a, b để đồ thị của hàm số y = ax + b đi qua 2 điểm: A(( 1; 4) và B(2; 3)
Bài 4(0,5đ) : cho hệ  ( với m là số cho trước)
Tìm m để hệ trên có nghiệm duy nhất thoả mãn: x ( 0; y ( 0
BÀI LÀM:
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