document.write( "Question 125955: Find the equation of the line containing the point (-1,3) and the parallel to the line 2x+y=10 \n" ); document.write( "
Algebra.Com's Answer #92308 by MathLover1(20850)\"\" \"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 \"-2\" (its from the slope of \"y=-2%2Ax%2B10\" which is also \"-2\").\n" ); document.write( "Also since the unknown line goes through (-1,3), 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-3=-2%2A%28x%2B1%29\" Plug in \"m=-2\", \"x%5B1%5D=-1\", and \"y%5B1%5D=3\"
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\n" ); document.write( " \"y-3=-2%2Ax%2B%282%29%28-1%29\" Distribute \"-2\"
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\n" ); document.write( " \"y-3=-2%2Ax-2\" Multiply
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\n" ); document.write( " \"y=-2%2Ax-2%2B3\"Add \"3\" to both sides to isolate y
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\n" ); document.write( " \"y=-2%2Ax%2B1\" Combine like terms
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\n" ); document.write( " So the equation of the line that is parallel to \"y=-2%2Ax%2B10\" and goes through (\"-1\",\"3\") is \"y=-2%2Ax%2B1\"
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\n" ); document.write( " So here are the graphs of the equations \"y=-2%2Ax%2B10\" and \"y=-2%2Ax%2B1\"
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\n" ); document.write( " graph of the given equation \"y=-2%2Ax%2B10\" (red) and graph of the line \"y=-2%2Ax%2B1\"(green) that is parallel to the given graph and goes through (\"-1\",\"3\")
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