document.write( "Question 260168: #25 This question involves to find parallel and perpendicular lines.
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document.write( "Find the equation of the line containing the point (4,1) and perpendicular to the line y=-3x+4.\r
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document.write( "I believe I do y-y1=m(x-x1)
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document.write( " y-1=4(x-4)
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document.write( " y=4x-16+1
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document.write( " y=x-17/4
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document.write( " However, I know this is wrong. the answer is supposed to be y=1/3x-1/3. I have no idea what I need to do. Any help would be appreciated. \n" );
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Algebra.Com's Answer #191618 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Find the equation of the line containing the point (4,1) and perpendicular to the line y=-3x+4. \n" ); document.write( "---------- \n" ); document.write( "The slope of the line is -3 \n" ); document.write( "The slope of lines perpendicular is the negative inverse, +1/3 \n" ); document.write( "------------ \n" ); document.write( "Use y = mx+b and the point to find b: \n" ); document.write( "1 = (1/3)*4 + b \n" ); document.write( "b = -1/3 \n" ); document.write( "y = (1/3)x - 1/3 \n" ); document.write( " \n" ); document.write( " |