Parabola Question Help

Why do you want help Valleriia22?   

Yes this was obviously posted by you since there are 5 question all in a row, one after the other.

What have you done to help yourself?

Other than:

Post several poorly presented questions questions so that others can do you work for you.

Other people can do your homework, true enough, but other people cannot learn for you. 

Maybe learning is of minimal importance to you?

I have hidden three of your questions for the moment.

Learn from any answer that you get, ask questions, tell us what you have done for yourslef.

etc, etc

Then maybe you will be able to do the others by yourself.