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The graph given below represents the lin...

The graph given below represents the linear equation x+y=0.

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If the given points `(-1,1) " and " (-3,3)` lie on the linear equation x+y=0, then both points will satisfy the equation.
So, at point `(-1,1)` we put x=-1 and y=1 in LHS of the given equation, we get
LHS`=x+y= - 1+1=0`=RHS
Again, at point `(-3,3)` put x=-3 and y=3 in LHS of the given equation, we get
LHS `=x+y=-3+3=0`= RHS
Hence, `(-1,1) " and " (-3,3)` both satisfy the given linear equation x+y=0.
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