document.write( "Question 887888: Find the equation of the line that passes through the points (-2, 1) and (1, -2) \n" ); document.write( "

Algebra.Com's Answer #536906 by 2897696(96) $\"\"$ $\"About$

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first find the slope of the line rise/run or y1-y2/x1-x2:
\n" ); document.write( "1--2/-2-1 =m
\n" ); document.write( "1+2/-3=m
\n" ); document.write( "3/-3=m
\n" ); document.write( "-1=m
\n" ); document.write( "next plug any of the two points into the point formula: y-y1=m(x-x1):
\n" ); document.write( "i am going to pick (-2,1) because i feel like it:
\n" ); document.write( "y-1=-1(x--2)
\n" ); document.write( "y-1=-1(x+2)
\n" ); document.write( "y-1=-x-2
\n" ); document.write( "y=-x-1 <==this is in slope form
\n" ); document.write( "to make it into standard form put it so ax+by=c
\n" ); document.write( "x+y=-1
\n" ); document.write( "ANSWER: y=-x-1 or x+y=-1 \n" ); document.write( "

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