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tuandeptrai132002
2 năm trước
Bài 7: a) Vẽ đồ thị hàm số y = 3x. b) Tìm toạ độ điểm D, biết D thuộc đồ thị hàm số trên và D có tung độ là 6. c) Xác định các điểm A(1 ;3) ; B(2;0) ; C(-1 ;-3) trên hệ trục tọa độ và kiểm tra điểm nào thuộc đồ thị hàm số y = 3x. Bài 8: a) Cho hàm số y = f(x) = -2x + 3. Tính f(-2) ;f(-1) ; f(0) ; b) Cho hàm số y = g(x) = x2 – 1. Tính g(-1); g(0) ; g(1) ; g(2). XIN CẢM ƠN
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