函数g（x）的图象与函数y=2x+3的图象关于直线y=x对称，则g（x）=______．
∵g（x）的图象与函数y=2x+3的图象关于直线y=x对称，
∴函数y=g（x）与f（x）=2x+3互为反函数，
由y=2x+3解出x=
（y-3），将x、y互换可得f-1（x）=1 2
（x-3）1 2
∴g（x）=
（x-3）1 2
故答案为：
（x-3）1 2
| 完形填空。 | |||
| Look at the picture. It's a picture 1 ____ a park. 2 ____ the tree 3 ____ some birds.Are there 4 ____ boys under it? Yes, they are. They are 5 ____ English books. 6 ____ girls are there near the river? There are six. Are they 7 ____ games? Yes, they are. 8 ____ that girl behind the tree? That's Kate. She is 9 ____ a red skirt. She's 10 _____ tea. | |||
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