Предмет: Математика, автор: nikitaderyabin

треугольник задан вершинами А(0;-3) В(-4;1) С (2;3) составить уравнение прямой проходящей через точку А параллельной прямой ВС

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Автор ответа: moboqe
0
BC={6;2}-направляющий вектор прямой BC
Cоставляем уравнение прямой, проходящего через точку А параллельной прямой ВС, с помощью направляющего вектора BC:
(x-0)/6=(y+3)/2
2x=6y+18
x-3y-9=0 -- уравнение прямой, проходящей через точку А параллельной прямой ВС
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