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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'?
do you now how to find slope?
No, I do not.
ok so you would use the formula y2-y1 over x2-x1. do you see how to plug that in?
Isn't that how you find distance between two points, not slope?
no distance formula is different. slope can also be rise over run if you want to graph it
I am.. very confused.
here ill set it up for you
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
can you get it from there? It's just simplifying from here
I really don't understand. This subject is my absolute worst.
haha it takes time to understand geometry is a killer. I'll graph it for you one second
Thank you. c:
almost done sorry its taking so long
It's quite alright!
pretty sure it going to small than the original
So the answer is one? I'm very confused. I am not at all good at this stuff.
yes, is it multiple choice? it may show as 1 over 1
is there any answer choices?
Nope. :( It's one of those fill in the blank things.
Do I just put the answer as 1 and move on to the next question?
sorry i dont know this
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
yes it would be 1
That makes some sense.
Are you okay with helping me on a few more?
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¯¯¯¯¯.
I think it's A, but I am not sure.
hmm the slope wouldnt change so its not a or d
Oh. B then?
it's b because it would still go through point t it will just have a longer line
Ooh, okay, thank you. The next one I have to take a screenshot of.
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?
I.. uh.. uhm.. I.. I'm so confused on what to find.
From C to D I know you go down two and left one but.. ?
here ill draw it our again
wait yeah that all you need! so simplify -2/-1 and what do you get?
i didn't see you replied
I have no clue.. it's -3?
you just divide -2 by -1 lol
yeah! once you do it a few times it comes easy
yes so you're answer would be 2
do you understand how to find slope now?
what are you confused on?
I mean, I'm kinda stubborn on learning things and I forget equations easy.
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
when you change the scale factor of a shape the slope wont change so the slope remains -2
Hmm.. okay, thank you.
no problem, glad to help!
Yay, I passed!
good job you didn't get any of these wrong right?
You got them all right. I shall show proof, one moment.
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?
medals don't matter to me lol but sure
They make you more trust worthy. :) Will close this and open a new topic.