write an equation of a parabola from a given graph

  Рет қаралды 183,398

blackpenredpen

blackpenredpen

Күн бұрын

Пікірлер: 135
@blackpenredpen
@blackpenredpen 3 жыл бұрын
For more algebra tutorials, please see my new channel "Just Algebra" bit.ly/just_algebra
@jaypumphery.rockmusicmaste8827
@jaypumphery.rockmusicmaste8827 4 жыл бұрын
You covered more in this video than my math teacher does in a full hour and a half 😂
@Caleb-sp3fb
@Caleb-sp3fb Жыл бұрын
Strait facts
@blueberrygranger8890
@blueberrygranger8890 Жыл бұрын
nah fr bro
@brysontraylor783
@brysontraylor783 4 жыл бұрын
I wish this man taught all my classes
@blaise6355
@blaise6355 4 жыл бұрын
This is the first person I've known who does 7 hours of math on there bday.
@cindynelson1139
@cindynelson1139 3 жыл бұрын
As a parent trying to assist her online math learning 7th grader THANK YOU! Your explanation was perfect and you showed every step.
@dadaveed4272
@dadaveed4272 Ай бұрын
what kinda 7th grader learning this
@majedep1
@majedep1 15 күн бұрын
@dadaveed4272 Lol, we listen and we don't judge
@misterbaleize
@misterbaleize 3 жыл бұрын
Your dexterity at the white-board is phenomenal and your explanation is clear, concise and completely convincing: thank you.
@Hiatchhhx
@Hiatchhhx 3 жыл бұрын
I'M NOT EVEN JOKING. I HAD AN ASSIGNMENT DUE AT 12 AND THANK YOU THANK YOU FOR HELPING ME UNDERSTAND THIS STUFF lol
@Flip-s2w
@Flip-s2w 4 жыл бұрын
thank you so much, you explained it so much better than my actual math teacher:)
@greypencil6372
@greypencil6372 7 жыл бұрын
Another way to do this is to set Y = a(X-b)(X-c) and find a, b and c. Note that if X= b and/or X = c we have Y = 0. So take b = 1 and c = -5 and you end up with Y = a(X-1)(X-(-5)). In order to find a you should require that one of the points (0,5) or (-2,9) is on the graph. Substitue for X = 0 and Y = 5 and you see that 5 = a(-1)(5) or 5 = -5a. This gives you a = -1. The equation is Y = - (X-1)(X+5). This, of course, is identical to the solution in the video.
@-mynkz6451
@-mynkz6451 3 жыл бұрын
k
@aleena158
@aleena158 3 жыл бұрын
What if the prabola we are dealing with has no X intercept or only one? Is there any direct way like this one u wrote to get the standard ax^2 + bx + c ? Or do we have to open and solve the form shown in vid?
@fluffy_borb
@fluffy_borb 2 ай бұрын
This covered everything I tried learning for the past hour 😂.
@arshveersidhu9614
@arshveersidhu9614 Жыл бұрын
thank you so much you saved my life bless you
@promax1113
@promax1113 6 ай бұрын
this came in clutch, i literally have an exam about this in like no time
@ricardo-c4l7l
@ricardo-c4l7l Жыл бұрын
Thank you. I know you produced this video 6 years ago and your teaching skills have improved immeasurably. However, I think it would have been helpful if you explained that you tackled the problem initially by completing the square, as most of us would be more familiar with this approach when asked to write down the equation, given the turning point/vertex (or vice versa). Otherwise, well done and keep up the good work.
@CrimsonGeode
@CrimsonGeode 2 жыл бұрын
engaging and interactive, man is a literal chad
@pithecophagajefferyi6792
@pithecophagajefferyi6792 4 жыл бұрын
Thank you very much! I was struggling with my physics homework because I forgot how to write the equation of a parabola. This really helped me. :))))
@bernadettebeno-vu1jh
@bernadettebeno-vu1jh 4 ай бұрын
Thanks very much..your explanation is very very clear ❤
@ender_arrows682
@ender_arrows682 4 жыл бұрын
Very Helpful! I think this is exactly what I've been trying to figure out, and it was explained very well!
@TheManLarry1
@TheManLarry1 2 жыл бұрын
I was struggling to understand the material until i found this video, thanks a lot 😂🙏🏽
@caroannekennedy2794
@caroannekennedy2794 5 жыл бұрын
Thank you so much! This was very helpful and your explanation was very easy to follow!
@cole4249
@cole4249 4 жыл бұрын
Thank you this was very helpful, especially when you explain where the numbers came from when writing the equation itself at the end.
@astranetic801
@astranetic801 4 жыл бұрын
HE USED A BLUE PEN
@Adi-gw2sx
@Adi-gw2sx 3 жыл бұрын
You taught me more in 4 minutes than my teacher could in four days, thank you so much
@lazaroussakala7709
@lazaroussakala7709 3 жыл бұрын
excellent, simple and smart explanation.
@danswrath147
@danswrath147 Жыл бұрын
thank you for the basic break down, you simplified it more that all my teachers did through high school.
@avijxt
@avijxt 11 ай бұрын
bro this guy is so good, i literally learned so much and he is such a great teacher, keep up the amazing work dude
@waytopeace2703
@waytopeace2703 4 жыл бұрын
broo this man makes it look sooo EAASY.. And my teacher em doing some calculas type of shit to find the vertex.. LOL
@jennifertimms7779
@jennifertimms7779 Ай бұрын
I enjoyed your solution, thank you!
@thecommenter2295
@thecommenter2295 Ай бұрын
my teacher has been teaching this for 2 days but I understand it nowthanks to this 6 minute video 😂😂
@EdanClarke-xg4ip
@EdanClarke-xg4ip Жыл бұрын
I never thought I'd be using parabolas to optimize my builds in a video game, but here I am, lmao.
@miraberryy
@miraberryy Жыл бұрын
Thank you so much for this lesson, it helped me so much and I could understand everything perfectly
@yeetray6849
@yeetray6849 2 жыл бұрын
bro, I have been struggling to solve these damn problems, but you saved me!!!!!!!
@aaliyah5795
@aaliyah5795 2 жыл бұрын
srsly thank you so much, i was having such a hard time understanding, and i understood perfectly in this video
@Shilpe_e
@Shilpe_e 3 жыл бұрын
If we are not given the points on y axis then how can we make the equation..?
@MixChannel-gm8ri
@MixChannel-gm8ri 10 ай бұрын
he taught it less than 10 minutes amazing!
@lediszz7315
@lediszz7315 3 жыл бұрын
This was SOOO HELPFULL
@jamiedebbs2218
@jamiedebbs2218 3 жыл бұрын
Thanks you answered all the questions I had about this without having to struggle to raise my hand
@bigdog3628
@bigdog3628 6 ай бұрын
vertex is [-2 , 9] (v = h , k) y intercept is [0 , 5] x intercepts are [- 5 , 0] and [1 , 0] We have a "frowning" parabola. so we know that a is of a negative value So the vertex formula is y = -1(x+2)² + 9 (vertex form is y = a(x-h)² + k) The quadratic formula is y = -x² - 4x + 5 We know the a term is -1 because of the formulas x = h + √(-k/a) and x = h - √(-k/a) so lets prove it: x = -2 + √(-9/-1) negative divided by negative is positive so that means √9 which is 3 so x = -2 + 3 and x = -2 - 3. or the x intercept is the xy coordinate [1 , 0] and [-5 , 0] which is true for both cases. now prove the quadratic form: -1(x+2)(x+2) + 9. gives us -1(x² + 4x + 4) + 9 which finally is -x² - 4x -4 +9 or -x² -4x + 5 In order for there to be x intercepts the k term MUST be either the opposite sign of the a term OR k must equal 0. (otherwise you are taking the square root of a negative number. imaginary is ok for solving the equation, but it does not translate to the graph and it shows there is no x intercept) Made a couple mistakes and only caught them because I proved my equations. Always prove and show your work. If your teacher is worth their salt they will see where you are coming from and may advise you of where you messed up. Anyways it has been a long time since I've done this stuff and I only do them for fun to keep my brain sharp.
@butternife4577
@butternife4577 4 жыл бұрын
It might just be me but, why is his voice so stimulating?!?!?
@tylerschmidt6375
@tylerschmidt6375 Жыл бұрын
Thank you so much man, this is very clutch
@colinpollett337
@colinpollett337 4 жыл бұрын
Thank you so much this really helped me with my math
@arsaimaasnake1642
@arsaimaasnake1642 3 жыл бұрын
Thank you!!! I have a unit math test tmr and didn’t understand nothing but now I will do great🙏🏽
@chiefchocho5321
@chiefchocho5321 3 жыл бұрын
great work my man, u helped me a lot, keep up the good work!
@vivaansharma17
@vivaansharma17 Жыл бұрын
I have similar questions like this. But the turning point (vertex) is not given. How can I find that without the equation only from the graph?
@jorgegallegos6629
@jorgegallegos6629 Жыл бұрын
Thank you, great explanation.
@gpn962
@gpn962 2 жыл бұрын
Very clear! Thanks mate
@trulyy1726
@trulyy1726 3 жыл бұрын
U made this so easy thanks keep it up
@The_Daily_Light
@The_Daily_Light Жыл бұрын
Yes but in the case that I have the equation but not the parabola what can I do??
@penelopeflouras2402
@penelopeflouras2402 2 жыл бұрын
Super helpful video. Thanks a ton!!!!
@-mynkz6451
@-mynkz6451 3 жыл бұрын
i would die for this man
@madaragaming4064
@madaragaming4064 6 ай бұрын
thank you, u helped me alot
@chaluvarajushobha9291
@chaluvarajushobha9291 2 жыл бұрын
In Search of gold I got diamond
@chaluvarajushobha9291
@chaluvarajushobha9291 2 жыл бұрын
Super
@terryqokov6999
@terryqokov6999 2 жыл бұрын
I'm kinda confused if you don't know the number for h (x coordinate for the vertex). How would you complete the vertex formula?
@diyasinghall
@diyasinghall 2 жыл бұрын
Use the parabola formula (y-k)^2=x-h with the input your teacher gives u the h& k will be ur vertex points
@AyaanKhan-wf9em
@AyaanKhan-wf9em 2 жыл бұрын
Thank you so much this was so helpful.
@vanceberget2157
@vanceberget2157 4 жыл бұрын
Awesome video helped a lot
@annafedorchuk1178
@annafedorchuk1178 2 жыл бұрын
thank you so much. Its very helpful
@BenRebekah
@BenRebekah Жыл бұрын
Thank to so much for this explanation!! 🙌
@chungushungus
@chungushungus 6 ай бұрын
this guy is straight up cooking
@rohinihrudhay5600
@rohinihrudhay5600 2 жыл бұрын
Hello , thank you so much for the help man
@Shaheeeeer
@Shaheeeeer 3 жыл бұрын
Thank You !!!
@Veggiestick23
@Veggiestick23 Жыл бұрын
Thank you man, Sincerely.
@TheLoomCrafters
@TheLoomCrafters 5 жыл бұрын
Hipppity hoppity I took my moms credit card
@TheLoomCrafters
@TheLoomCrafters 5 жыл бұрын
QWERTY was a great night out of the way we got it one day and I got a good day and a good up way too long haha is that a big deal to get a little more than
@Adam-km9hs
@Adam-km9hs 4 жыл бұрын
thank you sir
@arthur7560
@arthur7560 2 жыл бұрын
thank you very much dude
@Santorio-w7b
@Santorio-w7b 3 жыл бұрын
Thank you broo
@hi-il7ug
@hi-il7ug 3 жыл бұрын
super helpful. thank you.
@rafaeldantas1443
@rafaeldantas1443 2 жыл бұрын
In the beginning I wasn’t understanding and in the end it seemed like I was in the beginning
@AmanSingh-fl4lh
@AmanSingh-fl4lh 4 жыл бұрын
Helpful
@Rz_i9
@Rz_i9 3 ай бұрын
Good job 👍👏
@abbking11
@abbking11 3 жыл бұрын
omg I was the 1500 like exactly and this video was super helpful I understood it super well thanks to the video
@cheesefactory2303
@cheesefactory2303 4 жыл бұрын
Thank you so much, you saved me man
@jaco32
@jaco32 3 жыл бұрын
Thanks
@krysoltlaltecatl3621
@krysoltlaltecatl3621 3 жыл бұрын
what if the graph doesn’t give you the vertex value?
@thatpenguin5290
@thatpenguin5290 4 жыл бұрын
can I use f(x) instead of y?
@ARS-fi5dp
@ARS-fi5dp Жыл бұрын
Thank you man❤
@flaminggamer5211
@flaminggamer5211 Жыл бұрын
Thank you!
@MunnaPooka
@MunnaPooka 3 жыл бұрын
Thank you so much
@nnnnnnncccccc1209
@nnnnnnncccccc1209 2 жыл бұрын
i'm gonna pass my exam, ToT, thank you so much 😊
@shikshyaraut722
@shikshyaraut722 2 жыл бұрын
Thankyou soo much 😢💖
@sophiarts2434
@sophiarts2434 4 жыл бұрын
THANKK YO SOO MUCH. ITS D LAST DAY OF OUR DEADLINE. AND THANKZZ TO U SIR, I FINALLY UNDETSTOOD IT.
@cudotza7301
@cudotza7301 3 жыл бұрын
Man Is literally giving me 5 head math power
@andreapv5289
@andreapv5289 4 жыл бұрын
Thanks man!
@Hutchza123
@Hutchza123 4 жыл бұрын
sir, you save my life. I appreciate your video hahaha.
@MSYBESTAMEDITOR
@MSYBESTAMEDITOR 2 жыл бұрын
mans marker switching skills tho😹😹 But well explained m8🙌🏽🙌🏽
@xxade6469
@xxade6469 4 жыл бұрын
My good sir thank u so much
@amberle1760
@amberle1760 4 жыл бұрын
THANKYOU SO MUCH!!
@La_Vida_es_Bella1
@La_Vida_es_Bella1 3 жыл бұрын
Thank you! Gracias
@zoopi6380
@zoopi6380 4 жыл бұрын
thank you!
@artupaysivar6884
@artupaysivar6884 2 жыл бұрын
Damn i met this question a while ago and i used my own method which was to multiply (x+5) with (x-1) to construct the quadratic equation
@euak9876
@euak9876 Ай бұрын
amazing ! tysm :D
@Juanilloelcrack
@Juanilloelcrack 4 жыл бұрын
thank you
@vokechamp
@vokechamp 7 жыл бұрын
thank you very much and how could one get the focus and the directrix from an equation in vertex form
@heikohaase5792
@heikohaase5792 2 жыл бұрын
Bringing me out the mud fr
@ziyadal-abbasi6549
@ziyadal-abbasi6549 7 жыл бұрын
thanks man got it very well
@christinezhou9385
@christinezhou9385 3 жыл бұрын
very nice
@mission3479
@mission3479 2 жыл бұрын
awesome 👍
@knowledgeispower6949
@knowledgeispower6949 3 жыл бұрын
Thanku
@dahpneyjung786
@dahpneyjung786 2 жыл бұрын
Wait, my teacher said that you cannot have a negative sign of the value of a, but if it is negative sign, you need to change the sign of all value. Im so confused 😭🙏 Please answer
@АкмаралАдилбек
@АкмаралАдилбек Жыл бұрын
AWESOME!!!!!!!
@ianjaypaullo1284
@ianjaypaullo1284 3 жыл бұрын
This is why I like Chinese when it comes to teaching
@TheManLarry1
@TheManLarry1 2 жыл бұрын
Okay. Thats racist and how do you know he's chinese?
@cocoGOAT6921
@cocoGOAT6921 4 жыл бұрын
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