Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Help, I need the following question about matrices solved

  1. Aug 31, 2010 #1
    1. The problem statement, all variables and given/known data

    Find the image location of point (5,2) after reflection in the x-axis followed by rotation through 180 degrees about the origin.

    2. Relevant equations

    Matrix Transformation

    3. The attempt at a solution

    None, need help!
  2. jcsd
  3. Aug 31, 2010 #2
    Well, can you do the first part of the question? (ie. the reflection)
  4. Aug 31, 2010 #3
    I know that the matrix A which represents reflection in the x-axis is:

    1 0
    0 -1

    But don't really know anything else about solving this question as it's all new to me...
  5. Aug 31, 2010 #4
    Forget about the matrix representation for now...

    What is the image of (5,2) reflected on the x-axis?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook