Transformations

MR. BIGSBY'S MATH WORLD

Transformations

2/10/2016

28 Comments

Vertical Translation
Horizontal Translation
Reflection
Dilation

28 Comments

Ally

2/11/2016 10:39:41 am

Hey

Erica

2/11/2016 12:59:37 pm

Nice movie.
By the way, is there a word for when the parabola gets thinner?(Un-dilation?)

Mr. Bigsby

2/11/2016 07:18:42 pm

When the parabola gets wider or thinner, it is still called a Dilation. A dilation factor of 10 would make the parabola thinner. A dilation factor of 1/2 would make the parabola wider.

Alexis Kahler

2/11/2016 01:39:11 pm

for the HW, what is vertically dilation because for number 2 it says that the function is vertically stretched with a dilation factor of 1/5?

Mr. Bigsby

2/11/2016 07:22:51 pm

Vertically stretched is just another way of saying dilation since the parabola kind of stretches upward or flattens out. Look for the factor to see if it gets more narrow or wider.

Rose Warner

2/11/2016 02:45:23 pm

Cool
Question
How do write the translations again

Mr. Bigsby

2/11/2016 07:25:06 pm

Check your notes for the two types of translations.

Vertical Translation = x^2 + 7
Horizontal Translation= (x + 7)^2

Georgia

2/11/2016 04:10:01 pm

Viola

2/11/2016 04:48:41 pm

is my blobfish okay

Mr. Bigsby

2/17/2016 10:42:56 am

Yes, just a little distressed.

Hazel

2/11/2016 05:16:28 pm

Comment- Wow! What a cool, mathy website! This really did clear the transformation thing up!

Question- Is there a mathematical reason for why a number in the parenthesis is really it's opposite?

P.S.
Quadratic shuffle is awesome! "Slide to the left, slide to the right... Reflect, reflect"

Mr. Bigsby

2/11/2016 07:41:55 pm

Great question! I briefly mentioned in class the reason the number in the parenthesis is really it's opposite. When trying to locate the x-intercepts of a function we need Y to equal 0. So if y = (x - 4)^2 think that only an X value of positive 4 will make Y equal 0.

The same works with horizontal translations. (x + 4)^2 only an X value of negative 4 will keep the vertex Y value at 0.

I am glad you liked the dance!

Megan

2/11/2016 05:23:51 pm

Ok👍🏻 I was wondering if you could respond to something I sent you on engrade...

Emily Ritzes

2/11/2016 06:44:00 pm

I watched the video...this stuff is easy for me.

Amna

2/14/2016 01:30:35 pm

Nice video

Julianna

2/17/2016 04:39:16 am

Nice video

Zoe

2/18/2016 06:38:31 pm

Good video

Kendle Weaver

2/18/2016 10:27:49 pm

I got a lot of notes from this video down on a piece of paper, this video really helped me understand! 😀😀

Krissy

2/22/2016 12:12:30 pm

I just realized I didnt comment on this one

Sarina

2/22/2016 01:32:59 pm

Krissy

2/22/2016 04:47:29 pm

Question: How will we know the dilation if there isn't a leading coefficient?

instead of a(x-h)^2+k

it's

(x-h)^2+K

I replayed the video 5x and still can't find an answer. Did I miss it?

Oops Hi (aka Logan)

2/22/2016 05:10:19 pm

Oops kinda late

jaelyn

2/23/2016 09:53:24 am

hiiii

lauren

2/25/2016 05:26:39 am

hiiiiiiiiiiiiiiiiii

Karli

2/29/2016 07:57:58 pm

Nice video

Fletcher

3/10/2016 05:30:18 pm

interesting video as always. i am trying to bring my grade up so i will comment on all of your videos sorry they will all be late.

maddox

3/16/2016 12:19:51 pm

Justin

5/31/2016 05:42:50 pm

Nice video probably should have watched it before the test be ause it really cleared things up

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