Kiem tra daiso II

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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