Question

who would like to help me :)

Answer 1

@SolomonZelman this one

Answer 2

This all is one question, right ?

Answer 3

the attachment and the text.. correct?

Answer 4

I see

Answer 5

So we see point D, and it's x and y coordinates are changes, by multiplying their signs times -1.

In other words x1 and x2
and y1 and y2

are both additive inverses of each other

Answer 6

yes

Answer 7

In this case, since you have the coordinate in the 1st quadrant, reflecting over y=x would be good, or applying the rule

(x, y) → ( x × {-1} , y × {-1} )

Answer 8

the last attachment you posted doesn't work for me.

Answer 9

Oh now it worked, both attachments are same :)

Answer 10

yeah

Answer 11

isn't that should be choice 2

Answer 12

The only correct transformation you have, to obtain the original points is to reflect across y=x.

Answer 13

ohh ok

Answer 14

thank you sooooooooooo much

Answer 15

Yw, Have fun !

Answer 16

is this one right answer ??

Answer 17

it doesn't work when I click ?

Answer 18

Ohh it worked... yes !

Answer 19

Sometimes attachments work late for me.

Answer 20

when i put this answer they mark me wrong
so this is not right answer

Answer 21

it's soo confusing

Answer 22

` changed the signs of the x- and y-coordinates.` And looking at the coordinate D, that is in the 1st quadrant it should be correct.

I'll check again though.

Answer 23

Sorry

Answer 24

It is over y=-x

Answer 25

Sorry

Answer 26

I confused it, it is y=-x, because it si going from top left to bottom right, and that's how a point on a top right (first quadrant) should be reflected to reverse the signs.

Answer 27

no problem
thanks for explain this problem :)

Answer 28

Anytime !

Answer 29

hm....................