anonymous
  • anonymous
Is one flag a translation image of the other, or rotation image? Explain. http://assets.openstudy.com/updates/attachments/55b931b0e4b0adef802b8fe6-lollygirl217-1438293958142-as.jpg My answer is: translation. each point in the image is shifted up (or down depending on point of view) the same amount from one to the other to find a center of rotation, you need to find the intersection of the perpendicular bisectors of the lines connecting the image to the preimage and those lines will all be parallel so there is no rotation. Is that a good enough for answer?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
Another question: Describe the image of 'D' first reflected across line l & then across line m. http://assets.openstudy.com/updates/attachments/515c5dfae4b07077e0c1d60e-vt-1365007876700-d.png My answer: http://assets.openstudy.com/updates/attachments/515c5dfae4b07077e0c1d60e-vt-1365007876700-d.png Is that good enough? 3rd question:
anonymous
  • anonymous
The dashed triangle is a dilation image of the solid triangle with the center at the origin. Is the dilation an enlargement or a reduction? Find the scale factor of the dilation. http://assets.openstudy.com/updates/attachments/55ba8e27e4b0aa1bfb5ce088-lollygirl217-1438303570754-as.jpg I actually am not sure on this one.
anonymous
  • anonymous
@Loser66 @campbell_st

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anonymous
  • anonymous
@vera_ewing
anonymous
  • anonymous
@EclipsedStar @KyanTheDoodle @mathway @triciaal @campbell_st @Loser66
anonymous
  • anonymous
It's been literally over 6 hours.
anonymous
  • anonymous
@pooja195
anonymous
  • anonymous
@sammixboo
anonymous
  • anonymous
@campbell_st
anonymous
  • anonymous
helllllllllllloooooooooooooo??? I literally have spent all day trying to get help...
anonymous
  • anonymous
@Australopithecus
anonymous
  • anonymous
@abb0t
Australopithecus
  • Australopithecus
Yeah that seems fine
anonymous
  • anonymous
The first on is? You can't just be telling me that, TELL ME if there is something more. I have waited literally all day for this to be answered and I do not want any mistakes on my assignment!
anonymous
  • anonymous
@iambatman
anonymous
  • anonymous
I still cant believe i haven't gotten an answer...
jtvatsim
  • jtvatsim
Are you still working on the second one? The dilation one?
anonymous
  • anonymous
No. Is the first one good btw?
jtvatsim
  • jtvatsim
Let me check.
jtvatsim
  • jtvatsim
For the first one, is your answer that nothing changes? D returns to where it was before? It looks like you might have posted the same screenshot twice by accident...
anonymous
  • anonymous
oh shoot hold on
jtvatsim
  • jtvatsim
No worries
anonymous
  • anonymous
This is my answer for number one. translation. each point in the image is shifted up (or down depending on point of view) the same amount from one to the other to find a center of rotation, you need to find the intersection of the perpendicular bisectors of the lines connecting the image to the preimage and those lines will all be parallel so there is no rotation. Is that a good enough for answer?
jtvatsim
  • jtvatsim
OK, I'm sorry, I was thinking about the "D" question. I'll look at your original question. How many questions did you post on this thread?
anonymous
  • anonymous
Just two
anonymous
  • anonymous
The second one I messed up on though...
jtvatsim
  • jtvatsim
OK, I like your answer for the first question (the flag images). I would probably have ignored explaining that it wasn't a rotation since that is sort of obvious from the diagram, but your explanation seems correct.
anonymous
  • anonymous
2.) Describe the image of 'D' first reflected across line l & then across line m. my answer: the letter d inverts laterally after crossing the line 1, and it becomes normal when it again crosses line m. It goes inverted and normal like an on/off switch. Is that a good enough explanation
jtvatsim
  • jtvatsim
Sorry, just juggling questions here. :)
anonymous
  • anonymous
Oh. My bad.
jtvatsim
  • jtvatsim
No worries, you were ignored for pretty much the whole day it seems, so I can appreciate that. :)
jtvatsim
  • jtvatsim
Instead of saying "crossing" I would say "reflecting over" on each line part. I really like the on/off switch analogy. I guess you could say that the end result is basically the same as a translation right? We did all this crazy reflecting stuff, and the result was just a slide over to the right. :)
anonymous
  • anonymous
Alright.
anonymous
  • anonymous
I just want to make sure it has enough detail and everything.
jtvatsim
  • jtvatsim
As long as an explanation is clear, accurate, and precise that should satisfy anyone. If your explanation convinces yourself, then you probably did a good job. You went above and beyond the lazy "because it is" explanation :P. lol
anonymous
  • anonymous
True, lol. And the first one is good as well? Sorry if I missed you saying yes or no.
jtvatsim
  • jtvatsim
The flag question? Yes it looked fine. I think I had said that I personally wouldn't have bothered to explain that it isn't a rotation because that seemed obvious from the diagram, but yes, it looked correct.
jtvatsim
  • jtvatsim
How was the third question? The triangle one?
anonymous
  • anonymous
Right. Sorry hold on for a quick second.
jtvatsim
  • jtvatsim
No problem :)
jtvatsim
  • jtvatsim
be right back, checking on another question :) just tag me on your reply
anonymous
  • anonymous
K.
anonymous
  • anonymous
Find the image vertices for a dilation with center (0,0) and a scale factor of 4.
1 Attachment
anonymous
  • anonymous
Is it 16,-2?
anonymous
  • anonymous
I am really not so sure on this.
jtvatsim
  • jtvatsim
sorry, back, openstudy is lagging a bit on my internet.
jtvatsim
  • jtvatsim
Mmm... not quite, they want you to find the coordinates for each of the four vertices. The graph isn't perfect, but I'm guessing we start with A(-3,1), B(4,-3), C(2,3), and D(-1,4). We will dilate these.
anonymous
  • anonymous
Okay.
jtvatsim
  • jtvatsim
So, since our scale factor is 4, we literally just have to multiply each coordinate by 4. It's that easy. So, A(-3,1) becomes (-12,4). And so on.
anonymous
  • anonymous
Oh, that is pretty easy.
anonymous
  • anonymous
So when you mean by multiply...you mean it would result in (-12,4) (-48,16)
jtvatsim
  • jtvatsim
Good question. I suppose my sentence was a little misleading. What I mean is that we do this for EACH of the four coordinates: So, A(-3,1) becomes (-12,4) we are done with A. Then, B(4,-3) becomes (16, -12). we are done with B. Do this for C. Do this for D. Does that clarify a little?
anonymous
  • anonymous
Yes, thank you : )
jtvatsim
  • jtvatsim
You are welcome. :)
anonymous
  • anonymous
Sorry again. But is that all after that?
anonymous
  • anonymous
@jtvatsim
jtvatsim
  • jtvatsim
Yep, just list the image vertices coordinates. If you want to look extra "mathy" We usually write the image coordinates with a little apostrophe above them so A(-3,1) is the preimage coordinate and A' (-12,4) is the image coordinate for example.
anonymous
  • anonymous
Okay, thanks.
anonymous
  • anonymous
I ended with saying vertices A' (-12,4) B'(16,-12) C'(4,12) D'(-4,16)
jtvatsim
  • jtvatsim
Let's check.
jtvatsim
  • jtvatsim
C' should be (8,12) if I'm not mistaken. Other than that looks good.
anonymous
  • anonymous
....Lol. How could I even- well its late. That is finally it. Thank you for all of the help~!
jtvatsim
  • jtvatsim
You are welcome. You've been staring at the same problems for a while now... believe me, strange stuff happens when you do that. :) Have a good night!
anonymous
  • anonymous
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