1.
а)у=27х-24;
б)у=40+14х.
2. В таблице.
Объяснение:
1) Выразить у через х:
а) 9х- 1/3 у= 8
Умножим уравнение на 3, чтобы избавиться от дроби:
27х-у=24
-у=24-27х/-1
у=27х-24;
б) 0,3у-4,2х=12
Разделим уравнение на 0,3 для удобства вычислений:
у-14х=40
у=40+14х.
2) Построить график уравнения 3х=2у-8.
Построить график. График линейной функции, прямая линия. Придаём значения х, подставляем в уравнение, вычисляем у, записываем в таблицу. Для построения прямой достаточно двух точек, для точности построения определим три.
Прежде преобразуем уравнение в более удобный для вычислений вид:
3х=2у-8
-2у= -8-3х/-1
2у=8+3х
у=(8+3х)/2
у=4+1,5х
Таблица:
х -2 0 2
у 1 4 7
The towel on the wall… It’s our ancient custom. There was not a single Ukrainian house , which would not be decorates with towels. A house without a towel was compared with a family without children. A towel symbolized not only aesthetic taste , it was a face of a house and of a hostess. The towels proved that the hostess was tidy and hard-working.
A newly-born child was handed with the towel, guests were met with bread and salt on the towel. A son , a husband, a father were seen off with the towel. While getting married the newly-formed family was standing on a towel too. Bread and salt on an embroidered towel were a symbol of hospitality of the Ukrainian people. To take the towel , to kiss bread symbolized unity, peace, love , understanding among people. This custom has a good tradition in our country.
Towel were used in different ceremonies and in everyday life as well: for wiping a face and hands, for drying dishes, for decorating the houses, for presenting dear people. The ornaments and colours of towels were different in different regions. A lot of songs about the embroidered towel have been created in Ukraine. Объяснение:
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