Finding a rule from a table of values using a combination of operations

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Finding a rule from a table of values using a combination of operations - Cool math

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12 жыл бұрын

👉 How to write the rule of a function given the table of values. To write the rule of a function from the table is somehow tricky but can be made easier by having prior knowledge of the type of function. If the function is a linear function, plugging any two sets of values from the table into the equation y = ax + b, where a and b are constants to be found and x, y are values taken from the table. Solving the two equations obtained simultaneously gives the values of a and b and hence the required rule.
Similarly, if the function is a quadratic equation, plugging any three sets of values from the table into the equation y = ax^2 + bx + c, where a, b, c are constants to be found and x, y are values taken from the table. Solving the three equations obtained simultaneously gives the values of a, b and c and hence the required rule. For tables with no prior knowledge of the type of function, a series of trial and error will lead us to the solution of the problem.
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Пікірлер: 105

@meganswart9146 4 жыл бұрын

omg thank you so much, nine years later and it helps me more than the recent posted videos

@mhontgomeryserrano6795 3 жыл бұрын

N-Nine years?

@Claire_az 3 жыл бұрын

Yeah

@hqribbo4950 4 жыл бұрын

I’m here because my teacher doesn’t teach very well

@hqribbo4950 4 жыл бұрын

safh maybe if you shut the fuck up and mind your own business, you might be able to keep your mouth shut

@peterparker8041 3 жыл бұрын

@@hqribbo4950 goddamn

@hqribbo4950 3 жыл бұрын

ShortBlue Killer 😃😃

@zoefaith8818 3 жыл бұрын

😹😹😹😹😹

@littlea420 3 жыл бұрын

@@hqribbo4950 holy shit 😄

@zev4003 4 жыл бұрын

2:43 In his brain: "Ok that didn't work"

@Chaneltaouk1 3 жыл бұрын

Lol

@brianmclogan 12 жыл бұрын

I try not to make monotonous videos, so interaction with my students is a must. I just love teaching high school, no plans for high degrees yet

@hhhhh-vn9ly 4 жыл бұрын

Brian McLogan Good on you Mr Mclogan

@consueloamortegui3099 3 жыл бұрын

2nd reply on 8 year old comment

@particleonazock2246 3 жыл бұрын

4th reply on 8 year old comment

@IAmSleepyAngle 4 ай бұрын

5th reply on 11 year old comment

@brianmclogan 11 жыл бұрын

you are very welcome!

@mopes9251 3 жыл бұрын

@thedarknessherself3454 3 жыл бұрын

Cool

@nazreenrasool9325 Жыл бұрын

Whatever school this man teaches in is so blessed

@brianmclogan Жыл бұрын

😍😍😍

@alexnicholls8435 4 жыл бұрын

there is a way that always works that isn't guess and check. Basically you look at the y table and see by how much does it move by. So for the first example, the y is moving by positive 2 (because the x is going from bigger to smaller) you have to check the x to make sure that it is moving positively. And then whatever you get. So in the example, you get positive 2 and you multiply that with the x. .And then you add or substract whatever number to make the table true. And it will work for every other one. Hope that made sense.

@noahbenavidez6719 3 жыл бұрын

@Chaneltaouk1 3 жыл бұрын

@MortalChamp Жыл бұрын

“Since we’re talking about functions *Chris*” LoL

@sweetpea724 Жыл бұрын

lol

@kyrieirving8110 4 жыл бұрын

you are less confusing than my math teacher, it was a good idea for you to make a math youtube channel.

@financialservicesprofessio7377 8 ай бұрын

Thank you so very much for this particular video. I have never heard anyone say "we could use a combination of various operations" to solve. I thought I was stupid, until I found this video and then everyting makes sense. Thank you, thank you, and thank you!

@louise1021 4 жыл бұрын

Is there an easier way to do this other than trial and error?

@Pixel_Perfecto 3 жыл бұрын

I just realized this is 8 years old omg

@Jdplayz-bq4ys 3 жыл бұрын

Now 10

@bobbybobisan7108 2 жыл бұрын

@f1memes_4life 3 жыл бұрын

Thank you so much! I have a quiz tomorrow so this really helps

@dhl9772 3 жыл бұрын

Thanks man, I always had trouble using tables to find rules. Tysm. You helped me big time 👍👍👍😊😊☺️

@Sxpphaa 9 ай бұрын

thank you so much, my teacher isnt the best at explaining and i feel this explained it to me

@crimsonmavrickyt3822 5 жыл бұрын

Did not know anything at first know I know how to do it off the top of my head

@GreaterDeity 12 жыл бұрын

Excellent video. They are really helping me get back to my roots in mathematics. Increase my efficiency when doing tedious calculations. You plan on getting your master's or doctorate? Another thing, is that I know it's annoying for you when you're trying to explain things, but it is hilarious when teachers call out students in the middle of an explanation when they are not paying attention. Good methods.

@gerdamarcel6907 6 жыл бұрын

Thank you very much thanks of you I now know how to do this equation.

@anythinggoes9527 3 жыл бұрын

Im watching this during my test

@markgreene1011 5 жыл бұрын

Thanks much- just used with my 11year old. Very helpful

@kyet1628 4 жыл бұрын

lol. i’m learning this in year 8 at 14 years old

@hqribbo4950 4 жыл бұрын

k yet you mean either year 8 age 13 or year 8 age 14

@hunterroach666 4 жыл бұрын

Uh I'm 17 and can't do this-

@teengamerz1276 3 жыл бұрын

@@hunterroach666 you just have to stop looking at comments and focus lol jk jk its a bit confusing but we will get there at our own paces

@kyrieirving8110 4 жыл бұрын

chris da bad boy 0:22

@bongamsibi8735 Жыл бұрын

Thank you sir you really helped me my teacher did not explain well but know I get it so thanks 😊

@nathanfreitas6659 3 жыл бұрын

Thank you so much God Bless You 🙏🏽 😂

@makanakamusengi7280 6 жыл бұрын

God bless... Thank you...

@brianmclogan 6 жыл бұрын

You are very welcome!!!!

@harrisonsoderman2658 3 жыл бұрын

thanks my guy u saved me

@sebwarwick4273 2 жыл бұрын

but what do i do if im starting with 0 in the x row

@ivymason8084 3 жыл бұрын

Yeah CHRIS

@dankestcornet8714 3 жыл бұрын

yeah CHRIS

@dineshnath7782 3 жыл бұрын

U look like jhony sins

@polarisice3190 4 жыл бұрын

what if the y value is unknown, what if we have to find the y value?

@evenblurryfacedoesntcarewh5699 4 жыл бұрын

Imagine having a famous teacher

@Charlotte-ff5fo 4 жыл бұрын

is the second table still f(x) ? I had thought it would be y = ______

@samsuke212x3 4 жыл бұрын

No, it stays the same as the table

@crimsonmavrickyt3822 5 жыл бұрын

Thank you

@aeronclavillas4150 3 жыл бұрын

@tomorourke1145 11 жыл бұрын

so helpful thanks

@huncho0929 4 жыл бұрын

lol nice video very good

@tomcruise7820 2 жыл бұрын

Wow high school stuff? I learned this in middle school

@ImSuperComfy 4 жыл бұрын

Oh my god thank you so much it all makes sense!!!!

@particleonazock2246 3 жыл бұрын

Cool pass, Eddie Woo

@user-kd2il4ik2x 11 ай бұрын

How is negative 2 times 2 equals to negative 2

@softrose5380 3 жыл бұрын

why not dealing with this as slope function?!

@prin5402 2 жыл бұрын

u look like talalala i love it

@mozieyt_219 3 жыл бұрын

I'm here for my term 1 SAC

@thunderstrikebs5556 3 жыл бұрын

Be honest whose 2020

@jodiedellostritto9500 3 жыл бұрын

thank you from an 8th grade parent.

@onikamaraj2590 3 жыл бұрын

I’m doing a quiz on this and I don’t know a thing. 😭😭😭

@wifinesesi Жыл бұрын

hehehehe I stol the exam questions bheğeğehehehehe

@sophiewright8685 3 жыл бұрын

Omg this was literally so helpful that no you so much

@dawarkhan2050 2 жыл бұрын

@user-vm5mm9cg7j Жыл бұрын

Im in here because my teacher doesn't want to teach me or my class😢

@zachmberg3258 Жыл бұрын

Cris

@jade-lg2ld 3 жыл бұрын

audio not that good

@fortniteninja8442 4 жыл бұрын

THIS IS NOT COOLMATH WHERES THE GAMES

@bandanamishra1005 2 жыл бұрын

Very bad thori hindi bhee bool leay karo