阅读理解。

     Peter is an American boy from New York. He is tall and he has a good look. He has a big nose and

 big blue eyes. His hair is light (浅色) brown and curly (卷曲). He likes (喜欢) white. He is in a white

 T-shirt, white pants and white shoes. He is very cool. He likes basketball (篮球), too. He knows NBA

 stars. He says (说),"Yao Ming is cool!"We are good friends.

1. Who is Peter?

    _______________________________.

2. Is he tall and cool?

    _______________________________.

3. What color are his eyes and hair?

    _______________________________.

4. What color are his clothes?

    _______________________________.

5. Is Peter an NBA star?

    ______________________________.

已知点（3，9）在函数的图像上，则f（x）的反函数f^-1（x）=（）。