Finding values and domain and range from a graph (KristaKingMath)

► My Precalculus course: www.kristaking...
Learn how to find points on the function and the domain and range of a function using only the graph of a function.
● ● ● GET EXTRA HELP ● ● ●
If you could use some extra help with your math class, then check out Krista’s website // www.kristakingm...
● ● ● CONNECT WITH KRISTA ● ● ●
Hi, I’m Krista! I make math courses to keep you from banging your head against the wall. ;)
Math class was always so frustrating for me. I’d go to a class, spend hours on homework, and three days later have an “Ah-ha!” moment about how the problems worked that could have slashed my homework time in half. I’d think, “WHY didn’t my teacher just tell me this in the first place?!”
So I started tutoring to keep other people out of the same aggravating, time-sucking cycle. Since then, I’ve recorded tons of videos and written out cheat-sheet style notes and formula sheets to help every math student-from basic middle school classes to advanced college calculus-figure out what’s going on, understand the important concepts, and pass their classes, once and for all. Interested in getting help? Learn more here: www.kristakingm...
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[@kyleursu5140]

You are very easy to understand... Lots of people try to over-complicate concepts but you tend to paint them back and white which makes it very easy to grasp the concept you are trying to get across. :)

[@kristakingmath]

Thanks for the kind words! :)

[@jayceinfinitealgharhythmns9814]

"Making the simple complicated is commonplace; making the complicated simple, awesomely simple, that's creativity." - Charles Mingus - Gotta say, that's what you do in a nutshell! Thanks so much for these videos!

[@kristakingmath]

Aw thanks! I'm glad you like the videos!

[@mohammeds6173]

Excellent work! I'm having my provincial next week and this really helped me understand the concept of finding the domain and range from a graph. Cheers!

[@mr.tuckers2848]

Thanks for helping me understand the differences between Domain, Range, and the functions. Helps a lot!! And you're still hotter than Calculus!!

[@ndxsp]

The best. You take approximately the same time I need to understand these concepts. Unlike Khan Academy, you do the math much much clear and to the point unlike any other. Thanks a million, ma'am, extremely appreciate everything you do.

[@kristakingmath]

slap14325 Thank you so much, I'm glad you like the videos!

[@vesacuno]

slap14325 Don’t talk about Kahn Academy like that

[@nederhood]

Cultural differences do matter subconsciously in liking or not liking and no one is to be blamed for that.

[@zadi8012]

Actually her teaching is very excellent and it’s easy to be understood.

[@Meatwadd2]

Omg, ive been looking up videos to get extra teaching for exams and have literally found myself searching for your vids all the time now! Just followed you. Your basically my math hero now lol thanks!

[@kristakingmath]

+Richard Argueless LOL, awesome! I'm so happy that the videos are helping!

[@scottt1976]

Your teaching was very demonstrative and easy to understand. Thank you!!!

[@sourbmahi2631]

Thank you SO MUCH !! Because of your excellence I understood this so much better, I got an A+ on my Math 1 Honors quiz !! (9th grade math )

[@TheKgar]

This was great and I found this helpful. Also you seem like a very sweet person to expend yourself for others. Thank you kind stranger!

[@kristakingmath]

I'm so glad it helped! And you're very sweet, thank you so much!! :D

[@MrSupernova111]

In my pre calc course I had such a difficult time understanding the domain and range in a function. This video made it so easy that its difficult not to understand it. Thank you so much!

[@kristakingmath]

I'm so glad it could help!

[@negretehh]

Thank you! I have a test in a week and this will help a lot :)

[@kristakingmath]

I hope so! :)

[@negretehh]

I have been watching a lot of your videos on your channel and they are very helpful! Can't thank you enough :)

[@TigeroRousteinire]

Ooooh!!! I finally got it! Thank you for articulating slowly and being so patient with your audience! ^_^ Too many videos just trample through the numbers expecting us to already understand what's going on. Subscribed! :3

[@kristakingmath]

I always hated when things were too fast, so I try not to do the same. :) Thank you for subscribing!

[@dumdumpumpum]

awesome ...... you are a great teacher !!!! thankx krista king .. you cleared my doubts !!!

[@pedroserrano8997]

Omg yasss you cleared up a lot of confusing topics in this vid that my math teacher didn't , hopefully I'll pass tomorrow's test :)

[@kristakingmath]

I hope so too, good luck on your test!!

[@StaticCollapse]

Thanks soo much!! I was stuck doing my math on these types of problems. It has been a while since I've done these types of equations. :D

[@alfredgondwe6076]

hey thanks for the lessons I love the way you explain you are so clear and straight forward.

[@zakantoine805]

This was actually a great help.. It got 2 of my 4 questions done. Thanks!

[@kristakingmath]

Love that! Glad I could help. :)

[@kristakingmath]

You are so welcome! I'm glad I can help. :)

[@kristakingmath]

you should use ( and ) by default. if you've already used those, and you need to wrap them in a second set of brackets, then you should use [], like this [ ( ) ] If you need three sets of brackets to define your function, then you use curly brackets, like this { [ ( ) ] }. hope that helps!! :)

[@MsAshley98765]

thanks so much

[@kirksr6711]

Thank you your videos have been so helpful

[@otisrbaker]

You are great and you've helped me so much! Thank you.

[@vrendus522]

*notes, the nature of the line drawn on adjacent to the line graph bar, in true genesis, would be symmetrical lineal function, not prescribed if asked by situation.Example a helix, in proportion is a helix as that would happen.This statement said as some may ask the question,"How does the line, if this is a problem by itself, know to make these statement proportions on the graph, if they are not pre-prescribed by a prothanitor.So described in self logic as genesis in design and a-genesis or non-symmetry.I got confused on this.Another term, a-proportionality.

[@kristakingmath]

Awesome! I'm so glad I can help! :)

[@Sammyboy630]

You are better than my hon algebra teacher! XD

[@kristakingmath]

You're welcome!

[@syamalchattopadhyay2893]

Excellent video lecture.

[@kristakingmath]

Thanks, I appreciate that! :)

[@kristakingmath]

I'm so glad you feel that way! :)

[@Afroninja12]

you have to press reply 🤡

[@hemarajue2736]

If we have holes on the graph, should we exclude those coordinate points from the domain and range?

[@allanlule8094]

Well understood thank u so much.

[@kristakingmath]

You're welcome, Allan! So glad it made sense! :D

[@matthewjames7513]

Excellent video thanks! Where did you find that picture of the blackboard!?

[@kristakingmath]

This is one just apple keynote :)

[@tanezzz]

Thanks

[@cherylmyers5778]

how do you determine whether to use parenthesis or brackets

[@adityakadpate7494]

Hey, Please forgive me if this question happens to be too stupid. But, can we figure out what the function is with the help of given graph?

[@vegetagoku7943]

hi Krista. can you explain binomial probability?

[@kristakingmath]

awww thank you so much!! :)

[@kristakingmath]

you're welcome!! :)

[@husna4u]

Thank you

[@kristakingmath]

You're welcome! Glad I could help. :)

[@acewttimer]

I do know that brackets are used for this but aren't there cases when parentheses are applied? what makes those two differ? Also do you know how this can apply to solving rational inequalities?

[@kristakingmath]

when you're representing a domain or a range, brackets are used for a closed interval, which means the endpoints are included. for example [2,3] means the interval is starts at 2 and ends at 3, but that both the left and right endpoints x=2 and x=3 are included in the interval. parentheses indicated an open interval where the endpoint isn't included. so if instead you had (2,3], it would mean that x=3 is included in the interval but x=2 is not.

[@acewttimer]

Thanks a lot. I needed this information desperately.

[@kristakingmath]

awwww thank you!! :)

[@gregl2249]

Great Job! thx and u have my subscription!

[@kristakingmath]

:D

[@macracwhite]

Silly to ask but at 2:02 can't we point out the +ve value of 2. It would not be exact 2, but it will be 2 point something i.e. 2.5 or 2.3 like that....can't it happen...

[@aanagul8787]

Thanks alot.

[@kristakingmath]

aana gul You're welcome.

[@syedmuntazirmehdi574]

I mean on maxima and minima please add some additional videos igot a big trouble in these topics.

[@mahmoudalawasheer9220]

thank you ageen your good teacher

[@kristakingmath]

You're welcome! I'm glad it could help!

[@mrprogamesxd3327]

mahmoud alawasheer i love u can u marry me

[@TheSoundLab.]

Hi its me again who couldn't find videos because of hairstyle lol, two weeks back. I have a question, is it possible to get a question in equations like f(1)=3 and f(5)= --2 and they ask for domain and range. do we have to draw a graph first to do that? please let me know as my exam is this Friday and i am really confused and can't find natural domain too. Thank you very much.

[@kristakingmath]

If that's all of the information you were given, then the whole function is simply a set that consists of only those two points. So your domain would be 1,5 and your range would be 3,-2. I hope that helps, and good luck on your exam!

[@juanar6233]

You are so awesome:)

[@kristakingmath]

Aw thanks!

[@hoptheloop]

f(x)=x(x-3) between 0

[@user-id2oh1gu3b]

Which pc program do you use in this video and other videos? I mean as a blackboard

[@kristakingmath]

I use a program called Sketchbook (by Autodesk) for the blackboard part of the video. :)

[@90pkil]

What if on my graph the domain of 1 has two lines on it. One starting at y=3 and other starting at y= -2.5. Do i write both of them down or what? Plz reply ASAP i gotta turn this in tomorrow.

[@90pkil]

Oh and it's a piecewise function graph.

[@abuzalmai5676]

so much helpfull

Hi.you are best.Iam from turkey ,ı dont know english but ı know math language ,so ı understant ,what you telling us. can you tell me ,which program do you use.its too nice.real blackboard.pls tell me

[@kristakingmath]

This is what I use to make my videos: www.kristakingmath.com/my-videos

[@Storchorrr]

Hey, i'm still a little hazy on how you got the domain and range :/

[@badninikillingit]

i am still confused.. the way you do it looks so hard :( is there a easier way ?

[@muhammadahmad1066]

Which Camera?

[@montasrhamza5543]

thanx

[@kristakingmath]

+montasr hamza You're welcome!

[@ashidilkhan]

You are the most wonderful thing i have ever seen i my life, You are the definition of beauty ,.

[@eluniversodelasmates.2245]

thank sister you spañol

[@toddyomom7696]

hott. I mean ummm, *ahem* intellectually stimulating.

[@TheSilvaSisters]

please be my teacher

[@kristakingmath]

I'm glad I can at least help through the videos. 😊

[@superzayman1]

this helped lol

[@karimkhan1312]

madam-- --- excellent-- i do not under stand generalised co ordinates in langragian mechanics

[@skylinebusta2842]

this helped, but why do you look like you got punched in the face?

[@jonathantosiocello]

Post a pic of yourself then, if you think you're in a position to talk...

[@vesacuno]

Janahan Coroiz Shut up you twelve year old

[@dima71387]

Are you single? Just curious.