Quadratic Word Problems (practice problems)

Building on our previous series about graphing quadratic functions, we're now exploring how these graphs relate to real-world problem-solving.

We'll be using various methods to solve word problems that involve finding specific x-values corresponding to certain y-values (such as zero). These scenarios are often tied to gravity-themed problems, represented by equations containing the term -16t^2, which reflects Earth's gravitational acceleration in feet and seconds. As we work through these problems, you'll become familiar with upside-down parabolas on graphs, discussing key concepts like vertex points and maximum values.

I encourage y'all to engage with different problem-solving approaches throughout the video. My teaching style here will focus on clarity, aiming to equip you with versatile tools to tackle a range of quadratic word problems.

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*PDF DOWNLOAD*

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*TIMESTAMPS*

(00:00) Introduction
(03:22) Problem #1: "Jason jumped off a cliff into the ocean in Acapulco..."
(15:49) Problem #2: "If a toy rocket is launched vertically upward..."
(27:42) Problem #3: "A rocket is launched from atop a 101 foot cliff..."
(34:33) Problem #4: "You and a friend are hiking in the mountains...
(44:21) Problem #5: "You are trying to dunk a basketball..."
(50:47) Problem #6: "A diver is standing on a platform 24 ft above the pool..."

[notdeeq]

This video I watched at lunch before my test helped me understand the big point question and get an A thank you sir

[Hima-]

2 years later and still saving people before their exams THANK YOU SO SO MUCH!!🙏🙏

[CarolineCoutinho-tk]

Hey! You are amazing! I have been stuck on this subject since last week. You were the best teacher I found here; you speak slowly, and I can see how much you enjoy teaching. In just one hour, you helped me understand everything. Thank you very much for helping so many students!

[pursuepower]

Clear, articulate, precise. As a fellow Algebra Teacher I really enjoyed watching your instruction, I picked up a couple of things to use in my own class. Good Job

[leothelionee]

keep these videos coming dude! these problems are quite entertaining to do, especially with you!

[dr.mikestutoringservicellc]

What a great video! Thank you Professor Robinson. I especially like when you point out the fact that that parabolic curve does not mean that the object is moving from left to right as time progresses. As you point out, rather in refers to the change in height as time progresses. That is such a helpful hint, and I will use it in my session today with my students. Thank you again.

[lorenzodeiana]

Saturday I have the Sat test and thanks to you I finally understood how to complete the square and use in word problems the vertex form.
Thank you so much for your help from Italy
🥇

[veerpachore]

sir you just saved my test scores... thank you so much!

[Ashad]

Bro, your the only teacher who actually teaches this well. Wish you were my actual teacher. Thank you so much.
Earned a Sub👍

[jasminerichardson]

Thank you i finally understand what i didnt understand and what i need to do to figure out these word problems you made it so simple and easy to understand you are a life Better than that 1 khan academy video you gave multiple examples and this is truly ging to help me ik it is!!! Thank you!!!!

[rexmon]

Wow, this video really helped me understand how to attempt these word problems in 20 minutes! Keep up the great teaching!!!

[sampreetsandhu]

what an great teacher I appreciate you alot

[svenhuber]

Omg im so happy to have found you tomorrow I have my ib Math hl and sl placement test and we had the hint of it being quadratics and factorisation, this has definitely helped me with review as I can’t do word problems to save my life

[TateTalksShorts]

Thank you!!! Such high quality videos I feel like getting you a Christmas gift 😭😭

[AdyShura]

Thank! This helped very much when i needed it. Where did you get your word problems by the way?

[chandlernoah]

🙏 My teacher was sick so she didn’t explain this but still said it would be on the test but this has helped me so much! Thank you!

[abbyhanifin]

So so so helpful! I sent this video around to everyone in my class. With finals coming up this vid was a life saver!!! You have earned yourself a new sub! :)

[tahopeya]

thank you Mr. Robinson, I hope you'll still continue on teaching

[styrowrld]

This was literally my notes in class today

[watermelonenjoyer]

hey, i just want you to know these videos were extremely helpful. thank you and keep up the good work.