Explain each briefly.

1. Is there a conjunction compound inequality which doesn't have a solution? (explain briefly)

2. Is it possible for the graph of solution of a conjunction compound linear inequality to be straight line? (if yes give example)

to be the whole plane? (if yes give example)

3. Is there a disjunction compound linear inequality which doesn't have a solution?

4. Is it possible that the graphical solution of disjunction compound linear inequality is

a.) straight line. If yes, give an example

b.) whole plane. If yes, give an example