document.write( "Question 160114: can someone please help me with this problem:\r
\n" ); document.write( "\n" ); document.write( "Which of the following is a line perpendicular to y = 1/2x + 4 ?\r
\n" ); document.write( "\n" ); document.write( "a. y = 1/2x - 1/4
\n" ); document.write( "b. y = 2x - 4
\n" ); document.write( "c. y = 2x - 1/4
\n" ); document.write( "d. y = -2x
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Algebra.Com's Answer #118088 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Answer \"d\" because its slope is -2 and
\n" ); document.write( "(-2)*(1/2) = -1
\n" ); document.write( "So the lines are perpendicular.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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