Bài kiểm tra 1 tiết Đại số 9 - Chương 2

Họ và tên : BÀI KIỂM TRA 1 TIẾT ĐẠI SỐ
 Lớp : . Thời gian : 45 phút
Điểm
Lời Phê
	Câu 1: Chọn kết quả đúng :
 1 a/. Điểm nào sau đây thuộc đồ thị hàm số y = 2x - 5 : 	
A(-2 ; 1)	;	B( 3 ; -2)	;	C( 1 ; -3) ;
 1 b/. Các khẳng định sau đây đúng hay sai ( Đ hoặc S )
	a/. Hệ số góc của đường thẳng y = ax + b (a ≠ 0 ) là độ lớn của góc tạo bởi đường thẳng đó với tia Ox.
	b/. Với a > 0 góc α tạo với đường thẳng y = ax + b với tia Ox là góc nhọn có tgα = a .
	Câu 2: a/. Vẽ trên cùng một mặt phẳng tọa độ Oxy đồ thị của các hàm số sau :
	y = x + 3	 và	 y = -2x - 3 .
	 b/.Hai đường thẳng trên cắt nhau tại M , xác định tọa độ điểm M .
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 	Câu 3: Cho hàm số y = ax + b (a ≠ 0 ) xác định hàm số đó với các điều kiện sau :
	a/. Đồ thị của hàm số trên song song với đường thẳng y = x và đi qua điểm A( -4 ; 1).
	b/. Đồ thị của hàm số trên cắt trục tung tại điểm có tung độ là 3 và đi qua điểm B ( 2 ; 1).
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	Câu 4: Cho hai hàm số bậc nhất :
	y = ( m - ) x + 1 	;	y = ( 2 - m ) x - 3 .
	Với giá trị nào của m thì :
a/. Hai đường thẳng cắt nhau .
b/. Hai đường thẳng song song với nhau .
c/. Hai đường thẳng cắt nhau tại điểm có hoành độ bằng 4 .
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