Является ли линейной функция заданная формулой:(на рисунке)​

There are some institutions and policies in the world that foster international trade.If these  institutions did not exist, many companies trade. If these institutions did not  exist, many companies would not at all be able to go international. The U.S. government created the Export-Import Bank(Eximbank) in order to reduce unemployment  in the country. Eximbank makes loans to U.S. exportrers and foreign buyers of U.S. imports if private financing is not available. A firm can also buy insurance from  the Foreign Credit Insurance Association (FCIA) to cover political risk (such as expropriation and loss due to war).The exporter can also buy insurance coverage on credit sales to foreign customer.

Напиши , какие два важных дела ты сделал ( а) на прошлой неделе , а какие нет !!! 

Ребята помогите пожалуйста с сочинением на тему "Что я узнал на уроке ОБЖ" только говорю сразу мне надо за пятый класс!!! ПОЖАЛУЙСТА=))