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# Cách vẽ đồ thị của hàm số y=ax+b

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by thao nguyen on 13 November 2012

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#### Transcript of Cách vẽ đồ thị của hàm số y=ax+b

Khi b=0, thì hàm s có dang y=ax, a#0. Muon ve do thi nay ta lam the nao? Cách ve đo thi cua ham so y=ax+b khi b#0, làm the nao de ve duoc do thi ham so y=ax+b? Cach 1: Ve duong thang song song voi duong thang y=ax va cat truc tung tai diem co tung do bang b. Cach 2: Xac dinh hai diem phan biet cua do thi roi ve duong thang di qua hai diem do Cach 3: Xac dinh hai giao diem cua do thi voi hai truc toa do roi ve duong thang di qua hai diem do.
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