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Math Help - Few questions

  1. #1
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    Few questions

    I would like to ask for help on a few questions I don't quite understand.

    When it says graph the reflection of triangle ABC in the line x = 5. I have a point at (3,6). For the answer I got (3,4). I was wondering did I relfect this correctly or did I mess up? Also there is one that says y = 0 how would I reflect something there?

    Now another question I have is with rotation using a protractor. I have a point on (-9,0) I have to rotate this 180 degrees and it ended up at (-1,0) I don't think that is correct though. The squares are 3/16 of an inch if that matters.

    Thanks for your help.
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  2. #2
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    Quote Originally Posted by Jubbly View Post
    I would like to ask for help on a few questions I don't quite understand.

    When it says graph the reflection of triangle ABC in the line x = 5. I have a point at (3,6). For the answer I got (3,4). <<<<<< Correct
    I was wondering did I relfect this correctly or did I mess up?

    Also there is one that says y = 0 how would I reflect something there? <<<<< y = 0 is the equation of the x-axis. So you have to reflect the original points about the x-axis.

    Now another question I have is with rotation using a protractor. I have a point on (-9,0) I have to rotate this 180 degrees and it ended up at (-1,0) I don't think that is correct though. The squares are 3/16 of an inch if that matters. <<<<<<< If the center of rotation is at (-5, 0), then you are right.

    Thanks for your help.
    ...
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