How to find the domain and range of a piecewise function | Functions | Algebra I | Khan Academy

Sal finds the domain and range of a piecewise function where each segment is linear.
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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.
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[@that_pac123]

Congratulations on the new free SAT course!!!

[@macksauce4059]

BRO YOU ARE BLOWING MY MIND!

[@leVraiQuasar]

excellent. thanks

[@ftb2024_official]

Thank you very much. Really appreciate it...🤝🤝🤝

[@thenorseman8546]

I think he changed the "such as" model to "|" from ":"
:)

[@vinasanjoyo]

Thank you, this is so helpful!

[@MohamedNasser-lu4go]

thanks

[@hussainrajput2231]

Excellent

[@mathsci8957]

Hey ! how a function can have two different value at a point.? -3 to 1 is in two piecewise function. ???? Please help

[@kashalackey8649]

I'm still confused about the range part

[@okayitskaty4912]

the range is just where the y stops on the graph, if it doesnt stop say, 3 is where it starts and it goes on forever, you would say y greater than or equal to 3

[@kashalackey8649]

kaitlyn tompos thank u

[@gregoryharlston0602]

I would recommend looking at the piecewise graph. The graph is continuous over the interval from 6

[@mystudy3715]

what will be the value of g(x) if value of x is not from -6 to 6?

[@begimaitemiralieva8597]

"I can write it more mathy", idk why I think it was cute

[@elliot12233]

You can tell he passed algebra, but not L.A 😆

[@austinchandler3079]

Ya know, a graph is much easier.

[@akira9638]

I still dont get it, may because it is not in interval notation

[@isaidwithaposedlook4500]

Is this works for quadratic functions?

[@ronshlomi582]

Yes, but if you have a quadratic function your domain and range would be (-infinity, infinity) because it continues in all directions

[@OncelerKidsAreCringe]

@@ronshlomi582 it does it?

[@Pemaken]

Too clutch

[@minormakesmocs]

Just because you can write it more “mathy” doesn’t mean you should 😂

[@anhle-pz8rm]

5th comment :)

[@opufy]

i didnt undertstand the whole middle interval logic at all x is less than -3 and 4??

[@atifuddin8384]

Still don't understand how to find range

[@theblife.]

bro lost me with the mathy stuff

[@alexandraramirez6545]

same..