document.write( "Question 568918: write the equation of a line parallel to 4x+5y=20 and passing through (2,1) \n" ); document.write( "
Algebra.Com's Answer #367161 by mananth(16946)\"\" \"About 
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4 x + 5 y = 20
\n" ); document.write( "Find the slope of this line
\n" ); document.write( "make y the subject ( rewrite in slope intercept form)
\n" ); document.write( "5y=-4x+20
\n" ); document.write( "Divide by 5
\n" ); document.write( " y =- ( 4/ 5)x+4
\n" ); document.write( "Compare this equation with y=mx+b
\n" ); document.write( "slope m = - 4/ 5
\n" ); document.write( "The slope of a line parallel to the above line will be the same
\n" ); document.write( "The slope of the required line will be- 4/ 5
\n" ); document.write( "m= - 4/ 5 ,point ( 2 , 1 )
\n" ); document.write( "Find b by plugging the values of m & the point in y=mx+b
\n" ); document.write( "1=-4/5 * 2+b
\n" ); document.write( "1 +8/ 5 = b
\n" ); document.write( "b= 13/ 5
\n" ); document.write( "m= - 4/5
\n" ); document.write( "Plug value of the slope and b in y = mx +b
\n" ); document.write( "The required equation is y = - 4/5 x + 13/5
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\n" ); document.write( "m.ananth@hotmail.ca
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