Предмет: Алгебра, автор: Mmofise

Дана функция: y=x^2+2x-8
a) запишите координаты вершины параболы;
b) определите, а каких четвертях находится график функции;
c) запишите ось симметрии параболы;
d) найдите точки пересечения графика с осями координат;
e) постройте график функции.
ПОЖАЛУЙСТА КТО МЕГАМОЗГ ПОБЫСТРЕЕ

Ответы

Автор ответа: Sod89
4

Ответ:

а)X0=-1 Y0=-9

b)Во все 4 четвертях

с)ось симметрии при x=-1

d)x=0 y=-8

y=0 x=-4

y=0 x=2

Приложения:

Sod89: Да
Sod89: Оформление может не таким быть
Mmofise: Уаааай спасибо
izakhunovakarina: а от куда вы взяли -4 и 2?
Sod89: Это точки пересечения с осью x
izakhunovakarina: а как вы их получили?
Sod89: на графике видно
izakhunovakarina: хорошо, спасибо большое
Sod89: Можно ноль вместо y подставить и решить уравнение,ответы будут такими же.
Sod89: И можно вместо x ноль подставить и посмотреть у
Похожие вопросы
Предмет: Английский язык, автор: justiscrew99
1. I’m afraid I don’t have … information about this tour.
A) many
B) much
C) a few
D) few

2. Have you ever seen this film?
Yes, I … . I … it when I was young.
A) have … saw
B) had … saw
C) have … seen
D) have … have seen

3. Lisa used to be afraid of mice but she … them now.
A) liked
B) used to like
C) like
D) likes

4. You can see a security guard in … of the door.
A) behind
B) front
C) opposite
D) above

5. Why did you … your classmate?
A) give the book
B) give to the book
C) give the book to
D) gave the book to

6. Nick has worked … this term.
A) hard
B) hardly
C) the hardly
D) the hard

7. How … ?
Not very.
A) well you can play tennis
B) can you play well tennis
C) well can you play tennis
D) can you play tennis well


8. I’m sorry. I can’t come now. I … on the phone.
A) am speak
B) speak
C) am going speak
D) am speaking

9. The book … me is interesting.
A) who you gave
B) which gave
C) you gave
D) you given

10. The visitors … the gardens first and then they … to their rooms.
A) were shown … were taken
B) showed … taken
C) were shown … took
D) was shown … was taken

11. When Alan was younger he … to keep snakes.
A) was used
B) used
C) got used
D) use

12. I’m sorry I … phone you yesterday.
A) couldn’t
B) could
C) may not
D) mightn’t

13. His car broke down, so he … to take the bus.
A) could
B) must
C) had
D) have

14. I’m hungry! I haven’t had … to eat since breakfast.
A) nothing
B) something
C) any
D) anything

15. Mary has lost her wallet. She has asked … , but … has seen it.
A) everywhere … nowhere
B) everything … nothing
C) everybody … nobody
D) somebody … anybody
Предмет: Химия, автор: ruzizodainom