Posted by korain on Monday, June 6, 2011 at 12:27pm.
x^2+2xy+y^2+x+y-2=0
Decomposition:
(x+y-1)(x+y+2)=0
Expresion has zeros when:
x+y-1=0
and
(x+y+2)=0
x+y-1=0
y= -x+1
x+y+2=0
y= -x-2
Equation of sraight line:
y = mx + b
m=slope
b=y-intercept
y= -x+1 Slope -1
y= -x-2 Slope -1
Lines with the same slope are parallel.
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