Помогите математика Дано: y = - 0,5x + 2 и y = 2x - 5

Без построения функции определить

1) Область определения

2) Область значений

3) Графическое название

4) y = 0, x =

5) y> 0, x∈

6) y <0, x∈

7) Функция по убыванию или по возрастанию.​

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below. the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

Which of the following equations is equivalent to x/3-6/x=1

If a line is defined by the equation y = 5x + 2, what is the slope?