Question

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I really need help with this. Tomorrow is my last day of school and if i dont finish all my assignments i wont pass. Please help!!

Answer 1

Please help me :(

Answer 2

@jhonyy9 can you help?

Answer 3

sorry but i thinkl this is a more complex exercise for me now - @rebeccaxhawaii please try help here - ty

Answer 4

@mathmate ??

Answer 5

Are you familiar with the notations?
\(S_y(x,y)->(-x,y)\) .... reflect about y-axis
\(D_k(x,y)->(kx,ky)\) .... dilation about origin, with a factor of k
\(T(x,y)->(x+2,y-15)\)......translation of (2,-15).

Answer 6

If you're not familiar with the above, I will give an example.
Take point A(4,9).
First reflect about the y-axis.
\(S_y(4,9)->(-4,9)\) according to the rule given for Sy.
Then dilate with a factor of 2, so
\(D_2(-4,9)->(2(-4),2(9))=(-8,18)
\(T(-8,18)->(-8+2,18-15)=(-6,3)\)
So A'(-6,3).
Repeat the same operations for B, C, D and E and you'll get your answer.

Answer 7

*
\(D_2(−4,9)−>(2(−4),2(9))=(−8,18)\)
\(T(−8,18)−>(−8+2,18−15)=(−6,3)\)

Answer 8

Can you give me the new coordinates?
i really need to get this done

Answer 9

@mathmate

Answer 10

@mathmate

Answer 11

Please help me??

Answer 12

If you want direct answers, you shouldn't be on this platform.

Answer 13

It is against the code of conduct, he has given you help with how to get to the solution.

Answer 14

I just want somebody to give me the new coordinates then explain how they got them.

Answer 15

@Seratul ?

Answer 16

I know he told me how to get them but i dont understand it.

Answer 17

@jim_thompson5910 ??? CAn you please help?!??

Answer 18

do @mathmate 's steps make sense? if not, then where are you stuck?

Answer 19

I dont understand how to find it. I want the new coordinates i dont understand how to get them though. Will vote best response

Answer 20

I need it fast i have a bunch of work to do and tomorrow is my last day to get it done

Answer 21

let's focus on point A

Answer 22

where is point A located? What are its coordinates?

Answer 23

(4, 9)

Answer 24

good

Answer 25

To reflect the point over the y axis, we change the x coordinate of the given point A = (4,9)

So we go from A = (4,9) to A' = (-4,9)

Answer 26

Okay

Answer 27

do you see how I did the reflection?

Answer 28

Yeah sorta

Answer 29

all I did was change the sign of the x coordinate

from +4 to -4

the y coordinate stays the same

Answer 30

Yeah

Answer 31

ok we now have (-4,9)

now we dilate by a factor of 2

that means we multiply EVERY coordinate by 2

Answer 32

multiply EVERY coordinate by 2

-4*2 = -8
9*2 = 18

so (-4,9) turns into (-8, 18) after the dilation step

Answer 33

make sense?

Answer 34

Yes

Answer 35

now how would we translate 15 units down? what must we do?

Answer 36

Move the coordinate 15 units down to (-8, 3) ?

Answer 37

very good

Answer 38

how would we translate 2 units to the right?

Answer 39

It would be moved to (-6, 3) Right?

Answer 40

nailed it

Answer 41

So E will be (-8, 0) ?

Answer 42

So here are all the steps for point A (see attached)

Answer 43

`So E will be (-8, 0) ?`
let me check

Answer 44

here are all the steps for point E (see attached)

Answer 45

I'll let you handle the other points. Follow those same steps listed

Answer 46

Hold on a second. Can you give me the steps for the others?

Answer 47

???

Answer 48

IM so confused now.

Answer 49

@jim_thompson5910

Answer 50

i got (-10, -1) for B

Answer 51

one moment

Answer 52

I also cot the rest i just need them checked. C (-10 -7) D (-4, -7) ?

Answer 53

`i got (-10, -1) for B`

I'm getting the same. See attached

Answer 54

:)

Answer 55

What about C and D?

Answer 56

`I also cot the rest i just need them checked. C (-10 -7) D (-4, -7) ?`

looks good. See attached

Answer 57

Thanls

Answer 58

Thanks lol

Answer 59

Can you help with more? Please lol I am not doing well in math and tomorrow is the last day of school so if i dont get them done i wont get to go to my freshmen year i'll have to be a 8th grade again

Answer 60

I am going to post another question and tag you.

Answer 61

post the next question in another thread

Answer 62

So we start with this (see attached)

Answer 63

Yes?

Answer 64

Then we reflect the blue pentagon over the y axis to get the red pentagon

Answer 65

I already turned this in. I need help with a new one.

Answer 66

Then after dilating the red pentagon, we end up with the green pentagon

Answer 67

then shifting it 2 units to the right and 15 units down, gives us the purple pentagon

Answer 68

post the next question in another thread

Answer 69

Yes

Answer 70

Thread? I am new here sorry lol

Answer 71

A thread is what we're on right now. Click where it says "ask a question" to start a new thread or post

Answer 72

I am going to post a new question and tag you okay.

Answer 73

ok