How to Find the Equations of a Polynomial Function from its Graph - Precalculus Tips

[christiannebiolo]

idk how my algebra teacher expected us to just figure this out... Great vid tho

[charlenewoelfel]

We didn't cover how to do this in my college class, but this type of question is going to be on our exam, so this is a huge help to me!! You are very clear and your explanation is easy to understand. Thanks a bunch!

[snip-sniptear]

Wow, watching this video made a 2 hour lecture and an hour worth of reading about polynomials functions into a ~4 minute lesson. Thanks! I'm sure I will run into much difficult problems idunnol.

[angies]

You helped me get an extra 23% on my test an for that I sincerely thank you.

[anisamontoya]

I was struggling for a while and your video helped me so much!

[haleystorm]

Such a helpful video! Thank you so much for taking the time to make it!

[udith]

I have a doubt, is this applicable to each and every graph? I mean there can be 2 or more graphs which have same roots but have different curvature, I mean one might go up and then down and again up and down before it touches other root which is unlikely to other polynomial functions, I hope I could draw on comment section to show u!!,

[FatherOfKittens]

Very helpful video, I am helping a student with Algebra 2 and needed a refresher, and this video was a GREAT help! Thanks.

[resendizgonzalezmaximo]

and what if my graph doesn´t touch the x-axis?

[Cpezzullo]

Mans just saved my life before my test

[indraindo]

if the graph doesn't intercept the x-axis, how to find the function? or it is just not a polymonial graph?

[mihailkotsev]

Is it supposed to be given that the polynomial is definitely a cubic? Otherwise, how do we know that it is of the form "a(x-3)x(x+2)", and not "a(x-3)x(x+2)(x^2+x+2)"? Or any other irreducible factor, or for that matter, any number of such irreducible factors tagged on after the "a(x-3)x(x+2)"?

[DarianGutierrezCalkins]

Wow, you're a better teacher than my math teacher!!! thank you fucking much 🙌🙆

[simplysunshine]

This was SO incredibly helpful!! Thank you!

[AdamFHanif]

Thank you so much 😇 This video really helps me to do my homework 😀

[balaji]

may i know under which topic this video is covered.?

[nathanielsitrin]

Thanks for the video. It was a great help!

[delaneygilfillan]

If you multiplied the factors before inserting the (1, 6), how do you get -1??? Because I ended up with -1.5 because my equation was x^3-x^2-6x.

[drewbransby]

And what if one of the roots is a double root?

[alilymae]

My teacher just gave this as an assignment and basically told us to figure it out.