document.write( "Question 172601: Find the standard form of the line that is perpendicular to y=3/5x+9 and contains (-5,-1) I have worked this several times and my mom has too but we are not getting one of the answers provided \r
\n" ); document.write( "\n" ); document.write( "answers are:
\n" ); document.write( "a)5x-y=5
\n" ); document.write( "b)5x-3y=28
\n" ); document.write( "c)3x+5y=5
\n" ); document.write( "d)5x+3y=-28\r
\n" ); document.write( "\n" ); document.write( "PS. this is a worksheet provided by accelerated math and not directly out of the book \n" ); document.write( "
Algebra.Com's Answer #127494 by Alan3354(69443)\"\" \"About 
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Find the standard form of the line that is perpendicular to y=3/5x+9 and contains (-5,-1) I have worked this several times and my mom has too but we are not getting one of the answers provided
\n" ); document.write( "answers are:
\n" ); document.write( "a)5x-y=5
\n" ); document.write( "b)5x-3y=28
\n" ); document.write( "c)3x+5y=5
\n" ); document.write( "d)5x+3y=-28
\n" ); document.write( "-------------------
\n" ); document.write( "y=3/5x+9 is in slope-intercept form, so its slope is 3/5. The slope of a line perpendicular to it will have a slope that's the negative inverse, -5/3.
\n" ); document.write( "y-y1 = m*(x-x1) m = -5/3 and (x1,y1) is the point (-5,-1)
\n" ); document.write( "y+1 = -5/3*(x+5)
\n" ); document.write( "3y+3 = -5(x+5)
\n" ); document.write( "3y+3 = -5x - 25
\n" ); document.write( "5x + 3y = -28
\n" ); document.write( "That's d.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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