anonymous
  • anonymous
If rectangle ABCD was reflected over the y-axis, reflected over the x-axis, and rotated 180°, where would point A' lie? [Hint: Place your coordinates in the blank with no parentheses and a space after the comma in the form: x, y]
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
@ganeshie8 @welshfella @mathway help pleaase
welshfella
  • welshfella
|dw:1439835853469:dw|

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More answers

welshfella
  • welshfella
the x is the point A what is the coordinates of the point after secodn reflection?
welshfella
  • welshfella
|dw:1439836017204:dw|
anonymous
  • anonymous
4, -2? im not sure
welshfella
  • welshfella
No it starts at (1,-1)
welshfella
  • welshfella
on the first refection it goes to (-1,-1) so after the second what is the coordinates
anonymous
  • anonymous
i cant really tell the numbers, im not good at this
welshfella
  • welshfella
well the numbers are bound to be 1's but one of them would be negative. Imagine the x axis is a mirror The point A' will be as far behind the mirror as A is in front of it
welshfella
  • welshfella
|dw:1439836344324:dw|
anonymous
  • anonymous
Sorry, What does it say on top of poit?
anonymous
  • anonymous
point*
welshfella
  • welshfella
can you see that the x coordinate is negative and the y coordinate is positive?
welshfella
  • welshfella
This point
anonymous
  • anonymous
Yes i could see that
welshfella
  • welshfella
so what are the coordinates
welshfella
  • welshfella
(x, y) = ?
welshfella
  • welshfella
|dw:1439836567432:dw|
anonymous
  • anonymous
4, -1 ?
anonymous
  • anonymous
i dont know why i keep getting 4
welshfella
  • welshfella
why 4?? 4 is here:- |dw:1439836657286:dw|
welshfella
  • welshfella
what does A; line up with ?
welshfella
  • welshfella
|dw:1439836711301:dw|
anonymous
  • anonymous
-1 and 2?
anonymous
  • anonymous
omg im so dumb
welshfella
  • welshfella
the x coordinate is -1 A' lines up with this Now the y coordinate to its right is 1 so A1 has coordinates (-1,1) The x coordinate comes first then the y coordinate
anonymous
  • anonymous
ohhh i get it now
welshfella
  • welshfella
* A' not A1
welshfella
  • welshfella
good
welshfella
  • welshfella
Now the rotation through 180 degrees is easy |dw:1439836993317:dw|
anonymous
  • anonymous
is that an x below 180?
welshfella
  • welshfella
it returns to its original position
welshfella
  • welshfella
now - my bad drawing - its an arrow showing the direction of rotation
welshfella
  • welshfella
It starts at (1,-1) and ends at ( 1, -1)
anonymous
  • anonymous
i got the arrow part
welshfella
  • welshfella
the origin where the axes cross at (0,0) is the point about which the point rotates.
welshfella
  • welshfella
|dw:1439837415204:dw|
anonymous
  • anonymous
So it starts at (0,0) ?
welshfella
  • welshfella
no it rotates about (0,0). It starts at (-1,1) and ends at (1,-1)
welshfella
  • welshfella
|dw:1439837566493:dw|
anonymous
  • anonymous
Ohhh makes sense now
welshfella
  • welshfella
gtg
anonymous
  • anonymous
thanks for the help.
welshfella
  • welshfella
yw

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