SOLUTION: how to solve x-y=3 and x+y=-1 by graphing show me how to graph this equation also if the system is inconsistent or the equations are dependent?

Algebra ->  Linear-equations -> SOLUTION: how to solve x-y=3 and x+y=-1 by graphing show me how to graph this equation also if the system is inconsistent or the equations are dependent?      Log On


   

Question 375159: how to solve x-y=3 and x+y=-1 by graphing show me how to graph this equation also if the system is inconsistent or the equations are dependent?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x-y=3
generate values for y from x
x=1,y=-2
x=2,y=-1
x=-1,y=-4
and x+y=-1 (green line)
similary for this equation.
..
plot the points to get the graphs
graph%28300%2C300%2C-5%2C5%2C-5%2C5%2C%28x-3%29%2C%28-x-1%29%29
the lines intersect at (1,-2), they are consistent and independant.
...
m.ananth@hotmail.ca