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

👉 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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Organized Videos:
✅ Piecewise Functions
• Piecewise Functions
✅ Graph a Piecewise Function | Hard
• Graph a Piecewise Func...
✅ Graph a Piecewise Function | Easy
• Graph a Piecewise Func...
✅ Evaluate a Piecewise Function
• Evaluate a Piecewise F...
✅ Find the Value that Makes the Functions Continuous
• Find the Value that Ma...
✅ Write the Piecewise Function From a Graph
• Write the Piecewise Fu...
✅ Write the Piecewise Functions From a Table
• Write the Piecewise Fu...
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[@meganswart9146]

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

[@mhontgomeryserrano6795]

N-Nine years?

[@Claire_az]

Yeah

[@brianmclogan]

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]

Brian McLogan Good on you Mr Mclogan

[@consueloamortegui3099]

2nd reply on 8 year old comment

[@particleonazock2246]

4th reply on 8 year old comment

[@IAmSleepyAngle]

5th reply on 11 year old comment

[@brianmclogan]

you are very welcome!

[@mopes9251]

ok

[@thedarknessherself3454]

Cool

[@hqribbo4950]

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

[@hqribbo4950]

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

[@peterparker8041]

@@hqribbo4950 goddamn

[@hqribbo4950]

ShortBlue Killer 😃😃

[@zoefaith8818]

😹😹😹😹😹

[@littlea420]

@@hqribbo4950 holy shit 😄

[@nazreenrasool9325]

Whatever school this man teaches in is so blessed

[@brianmclogan]

😍😍😍

[@zev4003]

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

[@Chaneltaouk1]

Lol

[@financialservicesprofessio7377]

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!

[@alexnicholls8435]

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]

?

[@Chaneltaouk1]

?

[@louise1021]

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

[@kyrieirving8110]

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

[@MortalChamp]

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

[@sweetpea724]

lol

[@f1memes_4life]

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

[@GreaterDeity]

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]

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

[@Sxpphaa]

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

[@dhl9772]

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

[@markgreene1011]

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

[@kyet1628]

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

[@hqribbo4950]

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

[@hunterroach666]

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

[@teengamerz1276]

@@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

[@bongamsibi8735]

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

[@crimsonmavrickyt3822]

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

[@sebwarwick4273]

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

[@kyrieirving8110]

chris da bad boy 0:22

[@JuWenjun-g7j]

How is negative 2 times 2 equals to negative 2

[@harrisonsoderman2658]

thanks my guy u saved me

[@nathanfreitas6659]

Thank you so much God Bless You 🙏🏽 😂

[@polarisice3190]

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

[@ivymason8084]

Yeah CHRIS

[@Pixel_Perfecto]

I just realized this is 8 years old omg

[@Jdplayz-bq4ys]

Now 10

[@bobbybobisan7108]

No

[@makanakamusengi7280]

God bless... Thank you...

[@brianmclogan]

You are very welcome!!!!

[@aeronclavillas4150]

Ty

[@dankestcornet8714]

yeah CHRIS

[@Charlotte-ff5fo]

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

[@samsuke212x3]

No, it stays the same as the table

[@anythinggoes9527]

Im watching this during my test

[@tomcruise7820]

Wow high school stuff? I learned this in middle school

[@softrose5380]

why not dealing with this as slope function?!

[@crimsonmavrickyt3822]

Thank you

[@ImSuperComfy]

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

[@huncho0929]

lol nice video very good

[@prin5402]

u look like talalala i love it

[@tomorourke1145]

so helpful thanks

[@particleonazock2246]

Cool pass, Eddie Woo

[@mozieyt_219]

I'm here for my term 1 SAC

[@dineshnath7782]

U look like jhony sins

[@evenblurryfacedoesntcarewh5699]

Imagine having a famous teacher

[@thunderstrikebs5556]

Be honest whose 2020

[@jodiedellostritto9500]

thank you from an 8th grade parent.

[@sophiewright8685]

Omg this was literally so helpful that no you so much

[@daghanabi]

hehehehe I stol the exam questions bheğeğehehehehe

[@dawarkhan2050]

Hi

[@onikamaraj2590]

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

[@jade-lg2ld]

audio not that good

[@zachmberg3258]

Cris

[@KwakhoBaka]

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

[@fortniteninja8442]

THIS IS NOT COOLMATH
WHERES THE GAMES

[@bandanamishra1005]

Very bad thori hindi bhee bool leay karo