A1 - Converting Factored Form to Vertex Form

Part 4 of 6

[@rademakermath2748]

There's a mistake in the video.
f(8) = -4
So in vertex form it should be minus 4 at the end instead of plus 4.
And the vertex is (8, -4)
Everything else and all the explanations are still right.

[@granddeer2974]

Yeah I was going to say that didn’t make sense, thank you for saying that though, I thought I was going crazy

[@Bladeswiper]

I thought i was dellusional when i saw that :p

[@shaquilleoatmealOG]

You are a literal saint

[@tienhuynh-dinh3832]

For those confused about 4 or -4 in f(8) = (8 - 10) (8 - 6)... yes, he corrected it (should be minus 4) down in the comments. This way hopefully, you don't have to scoll down too far! :) Great job... and thank you!

[@Bladeswiper]

phew thx

[@BoisNation]

Wow! This is so much easier than what my math teacher taught me. Thanks so much for sharing!

[@phoontoomuch]

give me a kiss

[@plague4415]

Remember you help people more then you think, keep up the good work👍

[@user-np7fp9dv5v]

Thank you so much!!! I'm a math major that couldn't understand this simple concept and you helped so many things click!

[@verd5782]

this helperd me a lot in my test LOL thank you so much dude

[@PolarClips-j7o]

when you do f(8) and simplify, how is -2•2 positive 4? Shouldn’t it be -4?
Also thank you, this helps me out a lot.

[@humzaKun]

Yes, it's supposed to be -4. I put the factored form into desmos and it was translated down 4. so the Vertex form for that equation is y = (x - 8)^2 -4

[@rademakermath2748]

yes it should've said -4. I'll put a screen up at that moment

[@exmachina8475]

@@rademakermath2748 what happens if your h ends up as 0? Do you write it as x - 0 or x + 0? And also, what happens if your a is 0? Is there a specific way to write it or do you just write 0?

[@rademakermath2748]

@@exmachina8475 if h is zero and you want to keep it in the vertex form style then you would do (x - 0) or just x.
'a' can't be zero. If it is, it won't be a quadratic anymore
You might mean "what if 'a' doesn't have a value written?". If there is no number where 'a' usually is, that means a = 1.

[@exmachina8475]

@@rademakermath2748 Okay, thank you!

[@nassdm8502]

thank you sooooo much!!!! you just saved me from a breakdown!!

[@racheld12]

this helped me more than 4 classes with my math teacher

[@Bladeswiper]

Thanks for helping me at 9 pm before my math test tomorrow lol

[@Scaylypie]

Doing my math hmwk in second period. This video saved me

[@Shotagandsuch]

Real

[@claravaz7817]

Thank you so much! I have this bookmarked on my computer now!! :)

[@haiqahkhan6922]

So, does that mean that the vertex for y=-2(x+6)^2+288 would be (-6, -288)? Also when writing the vertex for any question, do you change the signs for both the numbers cuz in some of your videos I watched, you only changed one of the numbers signs.

[@rademakermath2748]

It would be (-6, 288). Only the x value of the vertex gets flipped in the equation.

[@haiqahkhan6922]

@@rademakermath2748 thank you!

[@gamingwithmike7324]

Uhm Hi! May i ask if its a standard to divide x ints by two to find the aos

[@user-kq2wv4nv5t]

what an absolute G

[@cloudy5813]

Thank you!!!!!

[@fashionsuckman4652]

Thanks alot

[@anthonybonifacio199]

The part where u calculate the Aos..will have to be always add then divide it to 2?

[@rademakermath2748]

Yes. Because the Axis of Symmetry will always be halfway between the x-intercepts.

[@mech5562]

shouldn’t the four be a negative since it’s negative two times two?

[@rademakermath2748]

yes, it was written wrong. It should be -4.

[@FURYGAMER-kd4tw]

Sir where you do live

[@user-sm4qo6ip7v]

How did you get 288?

[@rademakermath2748]

Since the axis of symmetry is -6, that is also the x-coordinate of the vertex, so you need to plug that back into the original equation for x to find the y-coordinate of the vertex.

[@elishalopez2853]

this cleared up so much for me wow

[@rademakermath2748]

I'm glad it helped. Good luck with your class!

[@seapwoosy9339]

I thought it would be -4 instead of 4 since its -2(2)

[@rademakermath2748]

yes. that was pointed out a few months ago. it should be -4.

[@seapwoosy9339]

@@rademakermath2748 ok thank you I was so confused

[@treexasaurus]

im so confused what is f(x)???? is it just y? so instead of doing f(x)= its y=????

[@rademakermath2748]

f(x) is the output when x is inputted. So yes, f(x) is the same as y.

[@treexasaurus]

@@rademakermath2748 thank u so much u deserve more recognition

[@penny4884]

his voice is sexy he could teach me any day😉

[@AwasumOfficial]

-2 x 2 is -4. Not 4 bro

[@rademakermath2748]

yep, that correction is in the pinned comment bro.

[@AwasumOfficial]

@@rademakermath2748 your replying to comments but your not posting anymore. I like your content man, why are you not posting anymore?😥