document.write( "Question 398791: which equation is an equation of the line that passes through the point (2,-1)and has a slope of -1
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Algebra.Com's Answer #282473 by rfer(16322)\"\" \"About 
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y=mx+b
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\n" ); document.write( "-1=-2+b
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\n" ); document.write( "y=-x+1
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