Уравнение прямой при точках А (3;2)В(-1;-5)
A(3,2),B(-1,-5) k=tg a = (y2-y1)/(x2-x1), k = (-5-2)/(-1-3)=-7/-4 = 7/4 y-y1 = k(x-x1) y-2=7/4(x-3), 4y-8 = 7x-21, 7x-4y-13=0