Complete the dialogue. Mind the information in the box. You will leave your house in several minutes and will be back very late (it's your aunt’s birthday).

You: Hello! This is Mick, Bob's classmate. Can I speak to Bob. please?
Bob's mother: I'm sorry, but he is not in. Shall I ask him to call back when he comes?
You: No, I'm afraid I won't be at home later.
Bob's mother:I can take a message then. What’s up?
You: Good news! Please tell him that there will be no lessons tomorrow and our class will have a picnic in the country.
Bob’s mother:  You won't wear your school uniform, will you?
You: No, we won't. Everybody should wear sports clothes.
Bob’s mother: I think you will get hungry and thirsty there
You: Oh. yes! That is why everybody should take some food and drinks.
Bob s mother: I’ll give Bob some meat anti cheese sandwiches and a big bottle of lemonade.
You: That will be great. Thank you!
Bob's mother: Thank, you for calling us. Have a good time tomorrow! Bye, then.
You: Bye!

Линейной функцией называется функция вида y = kx + b, заданная на множестве всех действительных чисел.