Question

I need help on some geometry questions.

Answer 1

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'?

Answer 2

do you now how to find slope?

Answer 3

No, I do not.

Answer 4

ok so you would use the formula y2-y1 over x2-x1. do you see how to plug that in?

Answer 5

Isn't that how you find distance between two points, not slope?

Answer 6

no distance formula is different. slope can also be rise over run if you want to graph it

Answer 7

I am.. very confused.

Answer 8

here ill set it up for you

Answer 9

Alright..

Answer 10

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

Answer 11

can you get it from there? It's just simplifying from here

Answer 12

I really don't understand. This subject is my absolute worst.

Answer 13

haha it takes time to understand geometry is a killer. I'll graph it for you one second

Answer 14

Thank you. c:

Answer 15

almost done sorry its taking so long

Answer 16

It's quite alright!

Answer 17

pretty sure it going to small than the original

Answer 18

So the answer is one? I'm very confused. I am not at all good at this stuff.

Answer 19

yes, is it multiple choice? it may show as 1 over 1

Answer 20

is there any answer choices?

Answer 21

Nope. :(
It's one of those fill in the blank things.

Answer 22

Do I just put the answer as 1 and move on to the next question?

Answer 23

sorry i dont know this

Answer 24

very well

Answer 25

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

Answer 26

yes it would be 1

Answer 27

That makes some sense.

Answer 28

ok good!

Answer 29

Are you okay with helping me on a few more?

Answer 30

sure

Answer 31

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¯¯¯¯¯.

Answer 32

I think it's A, but I am not sure.

Answer 33

hmm the slope wouldnt change so its not a or d

Answer 34

Oh. B then?

Answer 35

it's b because it would still go through point t it will just have a longer line

Answer 36

Ooh, okay, thank you.

The next one I have to take a screenshot of.

Answer 37

Here we go. :)

Answer 38

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?

Answer 39

I.. uh.. uhm.. I.. I'm so confused on what to find.

Answer 40

From C to D I know you go down two and left one but.. ?

Answer 41

here ill draw it our again

Answer 42

wait yeah that all you need! so simplify -2/-1 and what do you get?

Answer 43

i didn't see you replied

Answer 44

I have no clue.. it's -3?

Answer 45

you just divide -2 by -1 lol

Answer 46

divide? really?

Answer 47

yeah! once you do it a few times it comes easy

Answer 48

Positive 2?

Answer 49

yes so you're answer would be 2

Answer 50

do you understand how to find slope now?

Answer 51

Sorta.

Answer 52

what are you confused on?

Answer 53

I mean, I'm kinda stubborn on learning things and I forget equations easy.

Answer 54

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

Answer 55

when you change the scale factor of a shape the slope wont change so the slope remains -2

Answer 56

Hmm.. okay, thank you.

Answer 57

no problem, glad to help!

Answer 58

Yay, I passed!

Answer 59

good job you didn't get any of these wrong right?

Answer 60

You got them all right. I shall show proof, one moment.

Answer 61

looks good

Answer 62

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?

Answer 63

medals don't matter to me lol but sure

Answer 64

They make you more trust worthy. :)
Will close this and open a new topic.