document.write( "Question 519290: write the standard form of the equation through the points (4,2) and perpendicular to y=2x-1 \n" ); document.write( "
Algebra.Com's Answer #345507 by Maths68(1474)\"\" \"About 
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Standard Form of Equation of the line:
\n" ); document.write( "y=mx+b
\n" ); document.write( "Given
\n" ); document.write( "y=2x-1
\n" ); document.write( "Compare above equation with the standard form equation
\n" ); document.write( "m=2 and b=-1
\n" ); document.write( "Since lines are perpendicular multiplicatin of their slope will be (-1)
\n" ); document.write( "So slope of the required line will be (-1/2)
\n" ); document.write( "Now we have a point(4,2) and slope (-1/2)of the line we can easily find required lines by putting these values in the equation of the straight line poin-slope form.
\n" ); document.write( "m=(y2-y1)/(x2-x1)
\n" ); document.write( "-1/2=(y-2))/(x-4)
\n" ); document.write( "-(x-4)=2(y-2)
\n" ); document.write( "-x+4=2y-4
\n" ); document.write( "-2y=x-4-4
\n" ); document.write( "-2y=x-8
\n" ); document.write( "-2y/-2=(x-8)/-2
\n" ); document.write( "y=-x/2+8/2
\n" ); document.write( "y=-x/2+4
\n" ); document.write( "Above equation is the standard form of the equation of the line
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