\[\boxed{\text{692\ (692).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\boxed{\text{692.}\text{\ }\text{еуроки}\text{-}\text{ответы}\text{\ }\text{на}\text{\ }\text{пятёрку}}\]
\[1)\ y - |x| = 0\]
\[y = |x|.\]
\[2)\ y = kx + b;\ \ ( - 3;0)\]
\[0 = - 3k + b\]
\[3k = b.\]
\[y = kx + 3k.\]
\[Одно\ решение:\]
\[k = 1;\ \ b = 3.\]
\[Два\ решения:\]
\[k = 0;\ \ b = 3.\]
\[Нет\ решений:\]
\[k = - 1;\ \ b = - 4.\]