Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

cassidyohrt

  • 2 years ago

Find the coordinates of the point (-5,7) when it is reflected across the line y=11.

  • This Question is Closed
  1. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Use mid point formula.

  2. cassidyohrt
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    But don't you need more than one coordinate?

  3. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    mirror being mid point of the line joining the two points. \[\left\{ -5,11 \right\}\] now \[-5=\frac{x2-x1 }{ 2 }\] and \[11=\frac{ y2-y1 }{ 2 }\]

  4. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    you know x1 and y1 find x2 and y2

  5. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Did you get it .

  6. cassidyohrt
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I completely understand what you're saying, but I honestly have no idea how to solve for x2 and y2. I remember learning this, but I haven't used it in 2 years.

  7. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    did you get the idea behind mid point

  8. cassidyohrt
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes I do!

  9. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Then take the given point as the first point in the case i.e (-5,7)

  10. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now use x1=-5 and y1=7

  11. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now use the formula that I have already posted

  12. cassidyohrt
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Wait, so wouldn't it be (-5,-7)?

  13. cassidyohrt
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Nevermind, let me resolve quick.

  14. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    did you get is answer as (-5,15). If not I can give us an another approach

  15. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.