## Domain and range of a function given a formula | Algebra II | Khan Academy

Domain and Range of a Function Given a Formula

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https://www.khanacademy.org/math/algebra2/functions_and_graphs/domain_range/e/domain_of_a_function?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII

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https://www.khanacademy.org/math/algebra2/functions_and_graphs/domain_range/v/domain-and-range-of-a-relation?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII

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like ei! we have a long a way to go oo

Thanks sir for explaining this topic . You helped me a lot . I never saw teacher like you .

I should have learnt this and lots of other topics a year ago but I couldn’t understand it no matter how much tutorial classes I’ve attended or videos I’ve watched 🥲 math is killing me

God save us.

Just casually looking through comments instead of paying attention.

BRO THE WAY MY MATH TEACHER EXPLAINS IT MAKES NO SENSE LIKE AM I STUPID OR SOMETHING?!?

staar test tmr bro i havent been to school in a month…

I’m confused

Him: Talks about imaginary numbers

Me:

What nowCrying over my homework right now because it's overdo and I still don't understand 😉

So can we write the range as y>= -5 ?

This is very complicated cause I am learning this in the 8th grade…

Hi, I am a student of University of the People, I have really benefited a lot from your programs. Thank you so much for all your selfless efforts to help us as students. We have learned a lot.

What you explained made since but couldn’t you have inputted x as another number or value to get the same curve or slope. Why did you choose -2 or how did you know it was -2. The domain and range would change depending on what numbers you chose so that’s why I’m confused. I understand that x to the 2nd power creates a quadratic function but confused on what the answer was if there was one answer to this question or problem. Thank you for your time

I am going to get 2 points tomorrow because of this video. Thanks, Khan Academy !!

crap, i think its time excuted code: red. Time to pull out the big guns its coffee time

math: This is understandable and reasonable.

also math: ok so we have

imaginary numbersKind of a side question ive had mostly guys for my math teacher in high school and 3of them are bald. Is math going to make me bald

I guess maths was not meant for me. lol

It's so frustrating when you're doing math and have some online classes… and your teacher gives you PDF printouts of old lessons…. and he writes the symbol for absolute value (this one —> |) the same as he writes the number one. That's only one of my problems when it comes to the domain and range.

Funny how i'm learning more from this channel than my PAID college.

I'm furiously sweating I have an exam on 8 mins

Very good!!! Good luck to Khan Academy Group

Thank you, you save me through high school😂

thanks, nice video

Thanks a lot for the video.

So can someone explain to me why he kept putting the " – " sign when working out the answers like 3(4) "- " 12 -2=2 instead of putting the " + " sign 3(4) "+" 12-2=2 ?