anonymous
  • anonymous
I need help on some geometry questions.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Polygon MNOPQ is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image M′N′O′P′Q′. The coordinates of point M are (2, 4), and the coordinates of point N are (3, 5). What is the slope of M′N'?
Baseballguy101
  • Baseballguy101
do you now how to find slope?
anonymous
  • anonymous
No, I do not.

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Baseballguy101
  • Baseballguy101
ok so you would use the formula y2-y1 over x2-x1. do you see how to plug that in?
anonymous
  • anonymous
Isn't that how you find distance between two points, not slope?
Baseballguy101
  • Baseballguy101
no distance formula is different. slope can also be rise over run if you want to graph it
anonymous
  • anonymous
I am.. very confused.
Baseballguy101
  • Baseballguy101
here ill set it up for you
anonymous
  • anonymous
Alright..
Baseballguy101
  • Baseballguy101
so well start with this. you have 2 points M (2,4) and N (3,5). plugging these into the formula you would get 3-2 over 5-4
Baseballguy101
  • Baseballguy101
can you get it from there? It's just simplifying from here
anonymous
  • anonymous
I really don't understand. This subject is my absolute worst.
Baseballguy101
  • Baseballguy101
haha it takes time to understand geometry is a killer. I'll graph it for you one second
anonymous
  • anonymous
Thank you. c:
Baseballguy101
  • Baseballguy101
almost done sorry its taking so long
anonymous
  • anonymous
It's quite alright!
Baseballguy101
  • Baseballguy101
1 Attachment
anonymous
  • anonymous
pretty sure it going to small than the original
anonymous
  • anonymous
So the answer is one? I'm very confused. I am not at all good at this stuff.
Baseballguy101
  • Baseballguy101
yes, is it multiple choice? it may show as 1 over 1
anonymous
  • anonymous
is there any answer choices?
anonymous
  • anonymous
Nope. :( It's one of those fill in the blank things.
anonymous
  • anonymous
Do I just put the answer as 1 and move on to the next question?
anonymous
  • anonymous
sorry i dont know this
anonymous
  • anonymous
very well
Baseballguy101
  • Baseballguy101
ok if you graph it it makes these twice as easy. You just look at hte two points and look how far up or down the y axis goes that is your rise. to find the run look how far the x axis goes left or right. after finding that you just simplify the fraction giving you the slope
Baseballguy101
  • Baseballguy101
yes it would be 1
anonymous
  • anonymous
That makes some sense.
Baseballguy101
  • Baseballguy101
ok good!
anonymous
  • anonymous
Are you okay with helping me on a few more?
Baseballguy101
  • Baseballguy101
sure
anonymous
  • anonymous
Polygon XYZW is dilated by a scale factor of 2 with point T as the center of dilation, resulting in the image X′Y′Z′W′. If point T lies on YZ¯¯¯¯¯, what can be said about Y'Z'¯¯¯¯¯¯¯ ? A) Y'Z'¯¯¯¯¯¯¯ passes through point T but has a different slope than YZ¯¯¯¯¯. B) Y'Z'¯¯¯¯¯¯¯ passes through point T and has the same slope as YZ¯¯¯¯¯ . C) Y'Z'¯¯¯¯¯¯¯ does not pass through point T but has the same slope as YZ¯¯¯¯¯. D) Y'Z'¯¯¯¯¯¯¯ does not pass through point T and has a different slope than YZ¯¯¯¯¯.
anonymous
  • anonymous
I think it's A, but I am not sure.
Baseballguy101
  • Baseballguy101
hmm the slope wouldnt change so its not a or d
anonymous
  • anonymous
Oh. B then?
Baseballguy101
  • Baseballguy101
it's b because it would still go through point t it will just have a longer line
anonymous
  • anonymous
Ooh, okay, thank you. The next one I have to take a screenshot of.
anonymous
  • anonymous
Here we go. :)
1 Attachment
Baseballguy101
  • Baseballguy101
you can do this! look at what i said earlier. so start by looking at the points how far down does the y axis go from point c to d?
anonymous
  • anonymous
I.. uh.. uhm.. I.. I'm so confused on what to find.
anonymous
  • anonymous
From C to D I know you go down two and left one but.. ?
Baseballguy101
  • Baseballguy101
here ill draw it our again
Baseballguy101
  • Baseballguy101
wait yeah that all you need! so simplify -2/-1 and what do you get?
Baseballguy101
  • Baseballguy101
i didn't see you replied
anonymous
  • anonymous
I have no clue.. it's -3?
Baseballguy101
  • Baseballguy101
you just divide -2 by -1 lol
anonymous
  • anonymous
divide? really?
Baseballguy101
  • Baseballguy101
yeah! once you do it a few times it comes easy
anonymous
  • anonymous
Positive 2?
Baseballguy101
  • Baseballguy101
yes so you're answer would be 2
Baseballguy101
  • Baseballguy101
do you understand how to find slope now?
anonymous
  • anonymous
Sorta.
Baseballguy101
  • Baseballguy101
what are you confused on?
anonymous
  • anonymous
I mean, I'm kinda stubborn on learning things and I forget equations easy.
anonymous
  • anonymous
Rectangle ABCD is dilated by a scale factor of 2 with the origin as the center of dilation, resulting in the image A′B′C′D′. If the slope of AB¯¯¯¯¯ is -2, what is the slope of A'B'¯¯¯¯¯¯ ? A) -4 B)-1 C) -2 D) 0
Baseballguy101
  • Baseballguy101
when you change the scale factor of a shape the slope wont change so the slope remains -2
anonymous
  • anonymous
Hmm.. okay, thank you.
Baseballguy101
  • Baseballguy101
no problem, glad to help!
anonymous
  • anonymous
Yay, I passed!
Baseballguy101
  • Baseballguy101
good job you didn't get any of these wrong right?
anonymous
  • anonymous
You got them all right. I shall show proof, one moment.
anonymous
  • anonymous
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Baseballguy101
  • Baseballguy101
looks good
anonymous
  • anonymous
Wanna help me with one I've been stuck on forever? Lol. I can open a new topic and give you more medals that way?
Baseballguy101
  • Baseballguy101
medals don't matter to me lol but sure
anonymous
  • anonymous
They make you more trust worthy. :) Will close this and open a new topic.

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