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Tahmina

  • 3 years ago

help with transformation

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  1. Tahmina
    • 3 years ago
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  2. muhammad9t5
    • 3 years ago
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    let me see your file.

  3. harsimran_hs4
    • 3 years ago
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    about the line y = x because two of the coordinates lie on the line itself and other two are mirror images of each other about the line y = x

  4. Tahmina
    • 3 years ago
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    okay

  5. Tahmina
    • 3 years ago
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    what does that mean?

  6. muhammad9t5
    • 3 years ago
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    i think D.

  7. Tahmina
    • 3 years ago
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    im thinking d too

  8. muhammad9t5
    • 3 years ago
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    yes because it will rotate due same points on x-axis.

  9. harsimran_hs4
    • 3 years ago
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    well D won`t work because rotation by 180 would result in reflection about y axis

  10. Tahmina
    • 3 years ago
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    then whats the answer?

  11. terenzreignz
    • 3 years ago
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    No it doesn't, @harsimran_hs4 Consider rotating the line y=x 180 degrees wrt the origin, you don't get the line y = -x

  12. Tahmina
    • 3 years ago
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    im thinking d makes sense

  13. Tahmina
    • 3 years ago
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    well does it?

  14. terenzreignz
    • 3 years ago
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    I vote yes :)

  15. harsimran_hs4
    • 3 years ago
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    well then tell me what is the reflection of point (-3,1) about line y = x ?

  16. Tahmina
    • 3 years ago
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    ill notify you if you are correct or not okay?

  17. terenzreignz
    • 3 years ago
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    Easier to see that the reflection of the point (3,2) about the line y=x is (2,3) which is not on the parallelogram.

  18. harsimran_hs4
    • 3 years ago
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    well point is (-3, 1) not (3, 2) i am considering

  19. terenzreignz
    • 3 years ago
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    Well, now that you mention it, the image is (1,-3)

  20. harsimran_hs4
    • 3 years ago
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    (-3, -3) and (3,3) lie on the line so after reflection they will also lie on the line and remain where they were and (-3, 1) and (3, -1) interchange their position

  21. terenzreignz
    • 3 years ago
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    But if it's to be the reflection with respect to the line y=x, then the image of each and every point must still be on the parallelogram, and the image of (-3,1), which is (1,-3) is not on the parallelogram.

  22. harsimran_hs4
    • 3 years ago
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    agreed my bad!! but how does d come out to be the solution?

  23. terenzreignz
    • 3 years ago
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    Because A, B, and C were wrong? lol

  24. harsimran_hs4
    • 3 years ago
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    LOL!! expected some good arguments tough

  25. terenzreignz
    • 3 years ago
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    I'm really not good at explaining geometric concepts, these things just come to me sorta instinctively :(

  26. harsimran_hs4
    • 3 years ago
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    cool got hold of it ...... FINALLY I AGREE D IS RIGHT!!

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