-5х при х= 2целых 8/15 12х-7 при х=0,05 3-1,5х при х=-1/3 2х-у потом идёт горизонтальная черта х-3у при х= =1;у=1/3

1*.Form nouns using suffixes -ness, -ity / -ty, -er / -or from these words, translate them.

Hard, effective, soft, thick, sharp, similar, regular, to sell, to buy, to create, to manage.

2.Translate the following derivative adverbs: adjective + -ly -> adverb

usual — usually, quick — quickly, serious — seriously, easy — easily, main — mainly, complete — completely, high — highly.

3*.Complete the sentences, using the adjectives and adverbs formed from the words in italics with the help of suffixes -ness, -ity / -ty, -or / -er, -ly.

People who travel a lot are calledness ____.

Robin Hood is very popular all over the world. You can explain his___by the fact that people love heroes who help the poor.

The population in the area is very dense. The___of the population in the area is high.

His reaction is rather slow. He thinks and acts___.

I like to design something new. I want to become a___.

I do not think your idea is effective. Can you prove its___?

Tigers are quick animals. They run very___.

It is dark outside. Are you afraid of___?

4.Translate the following derivative adjectives:

verb + -able —» adjective

measure — measurable, consider — considerable, rely — reliable, drink — drinkable, eat — eatable;

noun + -ous —> adjective

right — righteous, mystery — mysterious, space — spacious, hazard — haz­ardous.

5*.Form adjectives from these words using suffixes -able, -ous, translate:

to accept, to enjoy, danger, to adapt, to read, anonym, to value, to con­sume, to change, to understand, fame.

6*.Complete the sentences with the help of the adjectives formed from the words in italics using suffixes -able, -ous.

1. If you cannot eat something, it is not __________.

2. He is not afraid of any danger. He is fond of __________ situations.

3. I cannot read this book. It is not __________.

4. Everybody can rely upon him. He is a __________ person.

5. This castle has many mysteries. This__________ atmosphere attracts tourists.

6. There is much space here. I like __________        rooms.

7.Translate the following negative adjectives. Pay attention to the negative prefixes of the adjectives:

safe — unsafe, stable — unstable, happy — unhappy, pleasant — unpleasant, familiar — unfamiliar, certain — uncertain, real — unreal;

numerable — innumerable, expensive — inexpensive, visible — invisible, dependent — independent, different — indifferent, direct — indirect;

possible — impossible, polite — impolite, perfect — imperfect, practical — impractical, mortal — immortal; regular — irregular, relevant — irrelevant, rational — irrational, responsible — irresponsible, resistible — irresistible;

legal — illegal, liberal — illiberal, literate — illiterate, logical — illogical; honest — dishonest, able — disable, obedient — disobedient.

8* . Complete the sentences making adjectives in brackets negative.

This is a very_________ phenomenon (natural).

I do not know this formula. It is_________ to me (known).

This holiday is_________       among students (popular).

The results of their experiment were _________ (accurate).

The construction of such building is_________   (possible).

I think your idea is     _________   (rational).

This device has_________      advantages (numerable).

The law considers video pirating       _________  (legal).

I did not like the party. The atmosphere was _________ (pleasant).