Videos

4-3 Rotation Video 4

Added Nov 03, 2016 •

Copy this URL:
Embed code:	<iframe class="edlio-embed-player" type="text/html" width="640" height="360" src="//www.vhstigers.org/apps/embed/?v=126893" frameborder="0" allowfullscreen></iframe> Change dimensions

Show Transcript

yesterday we talked about performing I'm sorry performing man I keep reading performing up that's not the one I want to say we talked about rigid motion rigid motion remembers preserves shape and size so it stays the same when you after the what's formation and the this postulate right here says a rotation is a rigid motion and you're like thank you so much I now know that information so here  I went ahead and plotted the points already so if you need pause video so that you guys can do that too please do so  bummer yesterday we were doing a Glide reflection we slit at first and then we reflected it or we slid it two times that was a composition transformation well today or going to do the same thing except for now we're reflecting and rotating or translating and rotating  so the first thing we're going to do is we're going to do the reflection in the y axis and so remember that's just asking yourself how far away is each point from the y-axis and remember this is my why line I'm so how far away is our from the y axis or is one away so I go one away in the opposite direction make name this art brine  and how far away is I'm going to make this just a little bit longer how far away is Earth from the y-axis it is to away so I go 1/2 away in the opposite direction and Hallelujah we just became tada  alright well after the reflection then we have to rotate it 90 degrees and that was and that we have just done so a b  goes to  negative so right now I have our Prime and that one's at negative end  -3 and I have S Prime add negative to negative 6 and so when I apply the rotation of 90 degrees my flip flop spots so now they're at negative three negative one and here at the first one changes to a positive I don't know if you guys can hear my stomach gurgling but apparently I am hungry right now cuz my stomach is making all sorts of mices so I apologize if we can spots again -6, -2 and we're going to change the sign of the one in our first position just like that and now I'm going to plot my new points  are double Prime s double Prime positive 3 -1 1 2 3 negative and then positive 6 I parted that at 4 so let's try that again 123 -1 and then asses at 6 negative and then you fix those two as well and that is our final transformation we just do both of them  okay I want you guys to go ahead and stop it do the next one and when you're ready once everyone looks actually tried it first. I am talking to you 6. I am also talking to you we all need to be better at actually trying problem I tell you to so actually work together and try these problems out for me please I figured since this is a two-part example that I would show you the answers into pieces so here's the first part you want to rotate it a hundred degrees about the origin so I went back to my little chart and found out that you just change both the signs so T is that one too and that's what y the native one- to use which is two negative three negative five and two switches to -6 negative three please note that again it's not but it always makes it negative it switches the sign so if there was like a negative three or change to positive three and then I just grab that so don't give it another couple seconds I will post the final transformation the last transformation ask you to do a reflection in the x axis this right here is our x axis the horizontal line and you just want to ask yourself how far is each point from your access x-axis and so T is to away so I went to away in the opposite direction he was far away so I counted five in the opposite direction and V was three away so I counted three in the opposite direction ensley's are video notes this means that they are up online at  VH tigers . Org can you want to click on stuff on that home page in Sayre  and click videos and these will be the most recent ones that show up okay guys have a fantastic Friday and a wonderful weekend I will see you on Monday

Uploaded by Lauren Stouffer.

Videos

4-3 Rotation Video 4

More videos from Lauren Stouffer