geometry
posted by lilman .
The vertices of a triangle are P(8,1), Q(6,8), and R(4,3) Name the vertices of the image reflected across the xaxis.
my answer;
P1(8,1), Q1(6,8), and R1(4,3)

All good except P1.
Can you spot the error? 
The only choices they give are;
P1(8,1),Q1(6,8),R1(4,3)
P1(8,1),Q1(6,8),R1(4,3)
P1(8,1),Q1(6,8),R1(4,3)
P1(8,1),Q1(6,8),R1(4,3)
Soo I don't understand 
Your answer does not correspond to any of the choices, neither does mine!
So there is probably is mistake in posting the question.
Once you start using the correct question, think of the following.
There is a general misconception about multiple choices in mathematics.
The safest way to use the multiple choices is NOT to look at the answers. Try to do the calculations yourself, figure out the answer, THEN check which answer corresponds to yours. In a way, you use the choices to check your answer.
Here we are talking about reflection about the xaxis. What does that mean to you in terms of transformations?
You have probably learned that reflection about the xaxis is the transformation:
T(x,y) > (x,y)
Apply the transformation to each of the three points and then look for the correct choice. You can't miss it. 
I think I got it P1(1,1), Q1(6,8),R1(4,3)
Thank you! 
I do not believe that the 4 given choices correspond to the question.
Either there is a typo in the question, or the answer.
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