document.write( "Question 101150: Write the equation of the line which passes through the point (2, 1) and is parallel to the line with equation y =5/2x+6. \n" ); document.write( "
Algebra.Com's Answer #73651 by jim_thompson5910(35256)\"\" \"About 
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Solved by pluggable solver: Finding the Equation of a Line Parallel or Perpendicular to a Given Line

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\n" ); document.write( " Since any two parallel lines have the same slope we know the slope of the unknown line is \"5%2F2\" (its from the slope of \"y=%285%2F2%29%2Ax%2B6\" which is also \"5%2F2\").\n" ); document.write( "Also since the unknown line goes through (2,1), we can find the equation by plugging in this info into the point-slope formula
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\n" ); document.write( " Point-Slope Formula:
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\n" ); document.write( " \"y-y%5B1%5D=m%28x-x%5B1%5D%29\" where m is the slope and (\"x%5B1%5D\",\"y%5B1%5D\") is the given point
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\n" ); document.write( " \"y-1=%285%2F2%29%2A%28x-2%29\" Plug in \"m=5%2F2\", \"x%5B1%5D=2\", and \"y%5B1%5D=1\"
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\n" ); document.write( " \"y-1=%285%2F2%29%2Ax-%285%2F2%29%282%29\" Distribute \"5%2F2\"
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\n" ); document.write( " \"y-1=%285%2F2%29%2Ax-10%2F2\" Multiply
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\n" ); document.write( " \"y=%285%2F2%29%2Ax-10%2F2%2B1\"Add \"1\" to both sides to isolate y
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\n" ); document.write( " \"y=%285%2F2%29%2Ax-10%2F2%2B2%2F2\" Make into equivalent fractions with equal denominators
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\n" ); document.write( " \"y=%285%2F2%29%2Ax-8%2F2\" Combine the fractions
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\n" ); document.write( " \"y=%285%2F2%29%2Ax-4\" Reduce any fractions
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\n" ); document.write( " So the equation of the line that is parallel to \"y=%285%2F2%29%2Ax%2B6\" and goes through (\"2\",\"1\") is \"y=%285%2F2%29%2Ax-4\"
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\n" ); document.write( " So here are the graphs of the equations \"y=%285%2F2%29%2Ax%2B6\" and \"y=%285%2F2%29%2Ax-4\"
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\n" ); document.write( " graph of the given equation \"y=%285%2F2%29%2Ax%2B6\" (red) and graph of the line \"y=%285%2F2%29%2Ax-4\"(green) that is parallel to the given graph and goes through (\"2\",\"1\")
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