document.write( "Question 1185462: The equation of line passing through origin and perpendicular to line:
\n" ); document.write( "2x + y - 5 = 0 is ____?
\n" ); document.write( "A. 2x + y + 5= 0
\n" ); document.write( "B. x - 2y + 5 = 0
\n" ); document.write( "C. x - 2y - 5 = 0
\n" ); document.write( "D. x + 2y + 5= 0
\n" ); document.write( "E. None of these\r
\n" ); document.write( "\n" ); document.write( "[Note: If answer is option E, then find the exact answer]
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Algebra.Com's Answer #816291 by ankor@dixie-net.com(22740)\"\" \"About 
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The equation of line passing through origin and perpendicular to line:
\n" ); document.write( "2x + y - 5 = 0 is ____?
\n" ); document.write( "Change to the slope/intercept form
\n" ); document.write( "y = -2x + 5
\n" ); document.write( "the slope is -2, find the slope of a perpendicular line, s1*s2 = -1
\n" ); document.write( "-2*s2 = - 1
\n" ); document.write( "s2 = +.5
\n" ); document.write( "The line goes thru origin, therefore intercept is 0
\n" ); document.write( "The equation, then: y = .5x
\n" ); document.write( "put it back in the original form, mult eq by 2 and rearrange
\n" ); document.write( "x - 2y = 0
\n" ); document.write( ":
\n" ); document.write( "Answer is E
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\n" ); document.write( "\"+graph%28+300%2C+300%2C+-5%2C+5%2C+-5%2C+5%2C+-2x%2B5%2C+.5x%29+\"\r
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