The point-of-view of the novel Freak the Mighty is a first-person point-of-view. A first person point-of-view (denoted by "I") is where a character tells their own story. The narrator, in this case is Maxwell Kane, is able to tell the reader about the experiences they have had. This allows the reader to come to understand that the story being told is one in which the narrator actually lived.
Second person is rarely used (denoted by "you") given the entire story would be based upon assumptions by the narrator and the reader.
Third person (denoted by the use of he/she or names of characters) is used when a narrator is relating the "facts" of a story, but the narrator is not a character in the story. Typically, this type of story is narrated in third person omniscient (or, the all-knowing narrator). What this does is allow a reader not to make decisions about a character based on the biases which would be given by a first or second person narrator.
Freak The Mighty is told from a first-person point of view. The narrator's name is Maxwell Kane, an enormous boy with a learning disability. The other main character is "Freak", also known as Kevin, who is extremely intelligent but has a physical handicap. The two boys forge an unexpected friendship and find that their abilities compliment each other.
You can identify first person point of view when the narrator uses the word "I". Second person point of view is rarely used and uses "you", as if they were telling you what you did. Third person point of view uses third person pronouns such as he, she, or they.
"I went to the store and bought a watermelon."
"You went to the store and bought a watermelon."
"Alice and Rodney went to the store and bought a watermelon."