已知，关于x的一次函数y=（1﹣3k）x+2k﹣1，试回答：

（1）k为何值时，图象交x轴于点（$\frac{3}{4}$，0）？

（2）k为何值时，y随x增大而增大？

   My name is Eric Green. I ____ a student. I have a sister.____ name is Lucy Green. She is a student, too. I can play tennis, but not ____.Lucy ____ sports ,too. She ____ tennis every Sunday. Lucy and I both like ____ food. She likes salad and ____.I like ____ carrots very much. So, we like vegetables and we eat____ a lot every day, because we____they are healthy.

用方框所给的选项完成对话。

A: You must be really excited about leaving for America tomorrow, Li Ping!

B: Yeah. ____

A: Nervous about what?

B: I don't know many of the customs and manners in the USA. ____

A: Sure.

B: ____ 

A: Well, it's important to be on time when you're invited for dinner. ____  Americans expect their guests to be on time.

B: Then how long may I stay there?

A: ____  Or you seem to have come only for the meal. When your friends seem to be getting tired and running out of things, it's time to leave. The next day, call or write a thank-you note to say how much you enjoyed the evening.