How can you know that something is written in first person point of view?

She liked ice cream, but he liked cake. So they bought both.

Ester smiled brightly at his back, shrugged casually, and kept voice smooth as she reassured, "I'm not going anywhere." to laugh as she saw his shoulders almost flinch. 

A personal narrative is written in ______ person point of view.

Which point of view is the following:
"There is one mirror in my house. It is behind a sliding panel in the hallway upstairs. Our faction allows me to stand in front of it on the second day of every third month, the day my mother cuts my hair."
_{from Divergent by Veronica Roth}

Which point of view is the following:
"There is one mirror in my house. It is behind a sliding panel in the hallway upstairs. Our faction allows me to stand in front of it on the second day of every third month, the day my mother cuts my hair."
_{from Divergent by Veronica Roth}

Robert Jordan could walk well enough himself and he knew from following the old man that he could walk him to death. Robert Jordan trusted the man, Anselmo, so far, in everything except judgment. He had not yet had an opportunity to test his judgment, and, anyway, the judgment was his own responsibility." 

John's neighbor is angry because John plays loud music every day. John is frustrated at his neighbor because his neighbor complains too much. They talked about it and came to a compromise--John will still play his loud music every day, but will only play for 1 hour instead of 2.

What point of view is the following:
Cathy leaned into her computer screen with big eyes. She couldn't believe it- she had finally gotten a 100 on her math test! She knew her parents would be proud of her.

Sideways Stories from Wayside School by Louis Sachar.
 Leslie sat in front of Paul.  She had two long, brown pigtails that reached all the way down to her waist.  Paul saw those pigtails, and a terrible urge came over him.  He wanted to pull a pigtail.  He wanted to wrap his fist around it, feel the hair between his fingers, and just yank.  He thought it would be fun to tie the pigtails together, or better yet, tie them to her chair.  But most of all, he just wanted to pull one. 

What point of view is the following:
"Effie Trinket trots to the podium and gives her signature, “Happy Hunger Games! And may the odds be ever in your favor!” But suddenly I am thinking of Gale and how the odds are not in his favor."
_{from The Hunger Games by Suzanne Collins}

Tuck Everlasting by Natalie Babbitt
At dawn, Mae Tuck set out on her horse for the wood at the edge of the village of Treegap.  She was going there, as she did once every ten years, to meet her two sons, Miles and Jesse, and she was feeling at ease.  At noon time, Winnie Foster, whose family owned the Treegap wood, lost her patience at last and decided to think about running away.  

 I will go to the movies tomorrow

Susan knows the way home.

You should tell me the truth.

She is one of my best friends.

He saw an alligator in the swamp

I walked to the park with my friend.

Can you tell me name?

She liked ice cream, but he liked cake. So they bought both.

A type of narrative perspective in where the  author uses pronouns like ''your" and "you."