document.write( "Question 1086079: .
\n" ); document.write( "Algebraically determine if the relation x + y = 0 is symmetric with respect to the x-axis, y-axis, the origin or has no symmetry.
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\n" ); document.write( "A. y-axis
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\n" ); document.write( "B. x-axis
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\n" ); document.write( "C. no symmetry
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\n" ); document.write( "D. the origin\r
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Algebra.Com's Answer #700219 by Boreal(15235)\"\" \"About 
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y=-x, f(x)=-x
\n" ); document.write( "change x to -x; f(-x)=-(-x)=x
\n" ); document.write( "not symmetric with regards to the y-axis. Not an even function
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\n" ); document.write( "f(x)=-x
\n" ); document.write( "-f(x)==x. Not an odd function
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\n" ); document.write( "Graph it and turn the graph upside down. It looks the same. Symmetrical about the origin.
\n" ); document.write( "Or, replace y with -y and x with -x, and we have -y=x, which is the function.
\n" ); document.write( "\"graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C-x%29\"
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